The discovery that selector genes specify adult structures in body segments came through experimental studies in model organisms like fruit flies, genetic analyses, and manipulations of gene expression.
How was it discovered that selector genes specify adult structures in body segments?The discovery that selector genes specify which adult structures will be formed by body segments came through a combination of experimental studies in model organisms, such as fruit flies (Drosophila melanogaster), and genetic analyses.
Researchers discovered the role of selector genes in specifying adult structures by studying the development of model organisms, particularly fruit flies. Fruit flies have a well-characterized genetic system and exhibit highly organized body segments. Through careful observation and genetic manipulations, scientists identified specific genes that were critical for determining the fate of body segments and their corresponding structures.
One of the key experiments involved studying mutations in fruit flies that led to abnormal body segment development. By analyzing these mutations, researchers identified certain genes, now known as selector genes, that were responsible for regulating the development of specific body segments.
Further experiments involved the manipulation of these selector genes using genetic techniques such as gene knockouts or overexpression. By altering the expression of these selector genes, scientists were able to observe changes in the development of body segments and the corresponding adult structures.
These studies provided evidence that selector genes play a fundamental role in specifying the identity and fate of body segments during development. They act as master regulators that activate or repress other downstream genes, ultimately determining the type and arrangement of adult structures formed by each body segment.
In summary, the discovery of selector genes specifying adult structures in body segments was achieved through a combination of experimental studies, genetic analyses, and manipulation of model organisms like fruit flies.
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You catch, tag, and release 35 fish back into a pond. Then, you catch 70 more fish, 12 of which have tags on them. What is the best estimate of the number of fish in the pond?
Answer:
204
Explanation:
The estimated total number of individuals in a population using the capture and recapture method is given by the following equation;
N = (M x C)/R
where N = estimates of the number of individuals in the population, M = number of individuals captured and marked the first time, C = total number of individuals captured (marked and unmarked) in the second attempt, and R = number of marked individuals captured in the second attempt.
In this case, M = 35, C = 70, and R = 12
Hence,
N = 35 x 70/12 = 204.16
Therefore, the estimated number of fish in the pond is 204.
A resident of _ is likely to leave the largest ecological footprint
Answer:
the United States
Explanation:
A farmer wants to produce sweeter grapes using artificial selection. Which of these strategies can he use to achieve this goal?
Answer:
Crossbreed the two sweetest vines in the vineyard to produce new plants.
Explanation:
Artificial selection is the method used by the humans to produce traits in plants and animals according to teh desired thought. In this process of evolution, desirable characteristics of plants and animals are reproduced.
In the given excerpt, the farmer can adopt the method of crossbreeding two vines which are sweetest in order to produce sweeter grapes.
Jonathan has type O blood. What must his parents be for Jonathan to get type O blood?
There are 4 possibilities
Construct Explanations Based on evidence from your model, explain how hotspot volcanoes change Earth's surface. When there are tectonic plates
Answer:
High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes. As the tectonic plate moves over the stationary hot spot, the volcanoes are rafted away and new ones form in their place.
Explanation:
Why is the moon abiotic?
Answer:
The moon is abiotic because it doesnt move and it's not a living thing.
is spirogyra a protist or thallophyta
Answer:
Protista
Explanation:
Kingdom: Protista and Division: Charophyta
Answer:
protista
Explanation:
it exists in haploid cells reproduced by binary fission
In this lab, you used a dichotomous key to identify organisms. Why would this skill be valuable to you? Check all possible reasons below.
A. It helps you classify organisms.
B. It helps you identify ecosystems.
C. It helps you study and appreciate biodiversity.
D. It helps you analyze an organism’s traits.
E. It helps you understand how organisms interact.
Answer:
All of Them
Explanation:
got right in edg (see pic)
hope this helps :)
What is the function of a coenzyme?
1. Binds to the substrate to raise activation energy
2. Inhibits the metabolic pathway of the enzyme
3. Couples with an enzyme to help remove or add electrons in order for the reaction to be catalyzed
4. Is a secondary protein complex that produces ATP
Regan is trying to determine if an unknown element is a metal. She does not want to damage or change the physical appearance of the element in any way. Design an experiment that could determine if the mystery element is a metal without changing its appearance.
Explanation:
Well, one could use a magnet to see if it's ferrous. One could melt it to check which type it is, use a metal detector, or just use their senses: If it dings or clinks like metal, and feels like it’s texture. If it polishes with metal polish, is reflective, can be shaped or shape when heated… It usually is a metal. If it rusts, or oxidizes, it is or contains metal. If it “smells" like metal, most likely, it is metal. Finally, if it walks like metal, and quacks like metal, most likely we have a metal
7. Which of the following is not an example of an abiotic factor?
O Water
O Soil
O Disease
O Air
Please help
Answer:
Disease
Explanation:
Water, Soil and Air are all biotic except for disease.
A que se denomina metaboismo? Diferenca anabolismo de catabolimo da 4 ejemplos diferencia reaccion endegonica de exergonica
Answer and Explanation:
Metabolismo: El término hace referencia a todos los cambios y las reacciones quimicas y biológicas que ocurren en cada célula del organismo y que resultas escenciales para el funcionamiento adecuado del organismo (una buena nutrición, crecimiento, reparación celular, conversion energética, etc.).
Estas reacciones ocurren a lo largo de toda la vida del organismo. Cada celula toma sustancias que luego modifica químicamente para integrarlas como nuevos componentes celulares. Algunos de estos componentes son utilizados en reacciones como la respiración celular.
El metabolismo puede ser dividido en anabolismo y en catabolismo. Durante el anabolismo suceden reacciones que consumen energía (ATP) para sintetizar moléculas complejas a partir de moléculas simples, y que son necesarias para el funcionamiento del organismo. Mientras que durante el catabolismo suceden reacciones que liberan energía al deegradar o reducir moléculas grandes en otras mas simples, para que el cuerpo pueda asimilarlas y las transforme en energia (ATP). Esta energía luego será utilizada en los procesos anabólicos.
Ejemplos:
- Respiración celular: Degradación de molécula del glucosa para liberar y obtener energía y consecuentemente, moleculas mas simples (CATABOLISMO)
- Ciclo de Krebs: Oxidación de la molécula acetil-CoA y obtención de energía en forma de ATP (CATABOLISMO).
- Digestión: Degradación del alimento para obtener elementos mas asimilables por la célula y energía (CATABOLISMO).
- Degradación de ADN y ARN (CATABOLISMO).
- Fotosíntesis: Transformación de compuestos inorgánicos en orgánicos utilizando energía solar (ANABOLISMO).
- Síntesis proteica: Utiliza aminoácidos y energía para formar proteinas necesarias para el organismo (ANABOLISMO).
- Ciclo de Calvin: Usa moléculas de CO2 para formar glucosa (ANABOLISMO).
- Gluconeogénesis: Síntesis de glucosa a partir de precursores diferentes a los glúcidos (ANABOLISMO).
Reacción excergónica: reacción espontánea que se lleva a cabo y donde se produce la liberación de energía. No necesita energía para suceder.Reacción endergónica: reacción no espontánea. Necesita energía para suceder. Ocurren reacciones celulares a partir del consumo de energía.Match each gymnosperm to its correct description. plzzz help me reeee
Answer:
Explanation:
Ginkgoes lose their leaves in autumn
Cycads look like a palm tree
Gnetophytes grow in deserts and rain forests
Conifers make up the largest group of gymnosperms.
Each gymnosperm is matched according to their correct description
Ginkgoes lose their leaves in autumnCycads look like a palm treeGnetophytes grow in deserts and rain forestsConifers make up the largest group of gymnosperms.What are Gymnosperms?Gymnosperm is a seed-producing plant which do not produce flowers or fruits and have uncovered seeds. These are born in cones and are not visible until maturity.
There are several characteristics of Gymnosperms. They are:
1. They are autotrophic, photosynthetic plants which tend to conserve water.
2. They have vascular system which includes roots, xylem, and phloem that is used for the transportation of water and nutrients.
3. The ovules and seeds of gymnosperms develop on the scales of cones which is in enclosed chambers called ovaries.
4. They are older than angiosperms on the basis of evolution.
They are divided into four classes like
Ginkgoes Cycads Gnetophytes ConifersThus, each gymnosperm is matched according to their correct description
Ginkgoes lose their leaves in autumnCycads look like a palm treeGnetophytes grow in deserts and rain forestsConifers make up the largest group of gymnosperms.Learn more about Gymnosperms, here:
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Why are stabilizing proteins neeed to keep the DNA strands separated?
Single-stranded DNA-binding proteins are protected exactly tightly to DNA, but with extremely little carefulness for individual nucleotide sequences.
What is DNA?
They accomplish this by interacting strongly with the DNA backbone, via hydrogen bonds with the ribose and phosphates and complementary control interactions with the phosphates.
When the Proteins of DNA Replication DNA Helicases. These proteins attach to the double-stranded DNA and facilitate the separation of the two strands. DNA single-stranded critical proteins.
Although, These proteins bind to the DNA as a stable tetramer the single-stranded structure is produced by the action of the helicases.
Single-stranded DNA-binding proteins (e.g., [RFA] eukaryotic replication factor A) then stabilize the decompressed template DNA, maintaining it in an extended single-stranded state so that it can be simulated by the polymerase.
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define cell division
Answer:
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle.
Explanation:
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle.
Can someone help me on this hw plz
Explanation:
Men are expected to do work that women cannot do. For example going outside and earning money or take decisions that effect the family. These are the thoughts of society and are mostly implemented in households.
Being masculine means that men comparatively have a strong physical ability than women. They can do heavy duty works with ease
Women are expected to sit in the house. According to society women are naive and need to be under the protection of man. Women are expected to be good mothers and obedient wives. They should be able to run the house well.
Being feminine means that women is very delicate and sensitive like a flower. A man has to nourish her and take care of her while the woman will become a beautiful flowers and fill the house with a strong fragrance.
Apart from these men and women are free to do what ever they want because in the 21st century not a lot of these old gender roles are followed. Sometimes the roles get swapped and women work outside just because they want to or because of the economic conditions.
I hope you found this useful
Answer:
men are supposed to be super tough and not cry ( I find that a wife's tale) being masculine means be tough and buff.
women are supposed to clean and cook and be a stay at home mom (also odd)
to be feminine means to be nice cry and happy.
list and describe three methods of keeping a gap between the birth of two children.
class 10 biology btw
Answer:
either a barrier or chemical method can be used
i.e, is de usage pills or copper-t , condom in males .. etc ..... ( correct me if i m wrong ) ....
5' GTA___ A A 3'
3' CATGCATT 5'
This segment of DNA has undergone a
mutation in which three nucleotides have
been deleted. A repair enzyme would replace
them with
A CGT.
B GCA.
C CTG
D GTA.
I’ll give you the brainliest if you answer with an explanation.
A. CGT
Explain- C pairs with G and A pairs with T. Vise verse.
The correct answer is A CGT. As repair enzyme would replace them with CGT.
The practical section of DNA is known as genes. Gene is the section of DNA that codes for a practical protein. Genes are inherited from mother and father to offspring. They convey genetic statistics from one technology to another.
What are the 4 bases of DNA?
CGT is an acronym for the 4 forms of bases located in a DNA molecule: adenine (A), cytosine (C), guanine (G), and thymine (T). A DNA molecule includes strands wound around every other, with every strand held collectively through bonds among the bases. Adenine pairs with thymine, and cytosine pairs with guanine.
Hence concluded that CGT is a segment of DNA that has undergone a
mutation in which three nucleotides have been deleted.
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For questions 6-15 use one of the following choices for each question. The choices may be used more than
once. Just write the letter for the choice not the word
A. Mutualism
B. Commensalism
C. Parasitism
6. One organism is harmed in a relationship
7. Two organisms benefit from a relationship
8. A tree with a Spanish moss population is unaffected by the relationship
9. A population of mice destroys grass roots in a field
10. A plotist that lives in a termite intestine digests wood eaten by the termite
11. A small insect called an aphid harms the stems and leaves of rosebushes
12. Bacteria make Vitamin B12 in the human intestine
13. Your cat has a severe case of fleas
14. A mosquito stabs the skin on your arm and a bite develops
15. Two organisms live together, one benefits and the other is neither helped or harmed by the
relationship
6C, 7A, 8B, 9C, 10B, 11C, 12A, 13C, 14C, 15B
how many cells are in each phase and whats the percent of the cells
As a cell grows in size, transporting the materials in and out of the cell becomes more difficult. Which process would help a cell to efficiently transport more materials into the cell as it grows?
Grupo de escolhas da pergunta
A) The cell develops a thinner cell membrane.
B) The cell undergoes a mutation.
C) The cell stores more materials in its vacuoles.
D) The cell divides into two cells creating more space for materials.
ASAP
Answer:
A
Explanation:
The process that would help a cell to efficiently transport more materials into the cell as it grows is the cell develops a thinner cell membrane (Option A).
What is cellular transport?Cellular transport is a process by which cells can take substances from their surrounding environment.
Cellular transport depends on the characteristic of the cell membrane where the substances need to pass.The mechanisms of cellular transport include active transport and passive transport.In conclusion, the process that would help a cell to efficiently transport more materials into the cell as it grows is the cell develops a thinner cell membrane (Option A).
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What is the ONLY way a female can be affected by a sex-linked trait?
Answer:
they can only be affected if their father is affected
How are environmental issues and food production related?
Answer: Food consumption and production have a considerable impact on the environment. Food production contributes
Explanation: , for example, to climate change, eutrophication and acid rain, as well as the depletion of biodiversity. It is also a considerable drain on other resources, such as nutrients, land area, energy, and water.
Please Helppp!!! What could lead to different populations of the same species living in different environments?
Answer: Migration, because species move to other places for food or a better or more suitable habitat and sometimes their is other species there.
Different ecological and biogeographical causes lead to different populations of the same species living in different environments. Ecological factors include intraspecific competition, migration, resource searching, habitat destruction, among others. Biogeographical dispersion involves wider areas and time factor. Human action is also a cause of dispersion.
-----------------------------------
Dispersion can be defined as the dissemination and distancing process of some individuals from others. It refers to the change in an organism's range or distribution area.
Different ecological and biogeographical processes might be involved in organisms' dispersion.
Ecological processes involve intraspecific competition for resources, habitat destruction, lack of resources -food or water-, among others. This is an intra-area, moderate dispersion that reduces competition and increases niche findings. It involves daily and seasonal migration and territoriality. Biogeographical processes refer to bigger changes that involve wider areas and time. It includes the historical factor, besides migration. This is an extra-area dispersion process.→ Jumping dispersion refers to a few individuals, in a short time, that can cross a barrier and occupy a new area. In this situation, the establishment is not always for sure. They must reproduce and start a new population of a certain size that can survive the new conditions.
→ Diffusion refers to populations that, through many generations, explores and expands in new regions with favorable conditions.
→ Secular migration is the diffusion through thousands of generations.
Dispersion is also caused by human actions, following different interests and goals.When two populations of the same species migrate to new areas and adapt to different environmental pressures, they will probably suffer from the speciation process with time, becoming two different species.
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1. Describe what occurs in the body of a type 1 diabetic after they consume a carbohydrate-heavy meal. In your response, include the following terms
Metabolized, Glucose, Insulin, Cell receptors, Pancreas, Energy
The process which would occur in the body of a type 1 diabetic after they consume a carbohydrate-heavy meal is:
The digestive system tries to break down the complex sugars which increases the blood sugar level which leads to the production of insulin to maintain the blood sugar level throughout the body.A Type 1 diabetic person is one who has been diagnosed with the level of diabetes, where the pancreas does not produce enough insulin to control the sugar levels of the body.
With this in mind, when such person consumes a high carbohydrate meal, it means that he has ingested complex sugars which would be difficult for the digestive system to break down which would overwork the pancreas, but as there is little or no insulin production, then there would likely be health complications.
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In general, food molecules are ___________ by the digestive tract of organisms so they can be _______________.
Select one:
broken down; absorbed into the bloodstream
broken down; released as heat
combined; absorbed into the bloodstream
converted to energy; used to power the muscles
Answer:
converted to energy ; used to power the musclesMARK ME AS BRAINLISThow extrusive igneous rocks and intrusive igneous rocks form?
Answer:
Intrusive igneous rocks are formed when magma cools slowy and large crystals are formed
Extrusive igneous rocks are formed when magma cools quickly, and small or no crystals are formed, it may be vesicular meaning it may contains air bubbles.
1. Which of the following refers to the process of an environment constantly changing?"
energy cycle
energy succession
ecological cycle
ecological succession
Answer:
I believe it's ecological succession.
Hope that helps!
Answer:
It's Ecological succession
Hey My Name is Chloe, and I need some Help, But if you can't it's ok,
So I need Some Facts and Topics on Land Animals, I did some research But I didn't find enough. Any Is fine
Answer: CHIMPANZEES. RECKONED to be the most-intelligent animals on the planet, chimps can manipulate the environment and their surroundings to help themselves and their community. They can work out how to use things as tools to get things done faster, and they have outsmarted people many a time.
Explanation:
Answer: Animal: Bengal tigers
Topics: Why are bengal tigers being hunted? How many bengal tigers are left in the world? Are bengal tigers being bred in captivity.
Facts:The White Tiger is one of the rarer relatives of the big cats. Due to their white coat they are often referred to as the bleached tiger. White Tigers are in fact a subspecies of Tigers and are the pigmented variation of the Bengal Tiger, sometimes found in the wild on the Indian subcontinent.
Explanation: I would suggest looking at national geographic if you want cooler animals.
What occurs to a DNA strand during DNA replication?
a
The DNA strand is shortened.
b The DNA strand is deleted.
с
The DNA strand is lengthened.
d The DNA strand is copied.
Check it
Answer:
It is copied.
Explanation:
Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
Answer:
it is copied option d
Explanation:
DNA molecule is copied to produce two identical DNA molecules.