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Travka [436]
2 years ago
6

¿Crees que el cromosoma Y contiene genes que son críticos para la supervivencia de un organismo? Explica tu razonamiento

Biology
1 answer:
stiv31 [10]2 years ago
3 0

Answer:

no, las mujeres no tienen el cromosoma Y y pueden sobrevivir. los extremos de las moléculas de ADN de los telómeros que ayudan a evitar que los extremos de los cromosomas se peguen entre sí.

Explanation:

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4 0
2 years ago
What function does recombination by crossing-over have in genetic variation?
Katena32 [7]

Answer: Crossing-over allows the genes that come from each parent to recombine before they are passed on to future generations because chromatids of homologous chromosomes mate and exchange sections of their DNA.

Explanation:

Chromosome crossing-over is the process by which chromatids of homologous chromosomes mate and exchange sections of their DNA during prophase I of meiosis, when pairs of homologous chromosomes, or of the same type, are aligned. The chromatids of the homologous chromosomes break off in the chiasmas and rejoin to allow recombination of the linked genes. So it occurs when regions at chromosome breaks mate and then reconnect to the other chromosome. <u>The result of this process is an exchange of genes, called genetic recombination</u>.

This allows the genes that come from each parent to recombine before they are passed on to future generations. Then, <u>it is an important source of genetic variability</u>, since it involves an exchange of segments between homologous chromosomes during the development of gametes. <u>This process allows that the descendants of an individual are genetically very different</u>, since it is very unlikely that an individual produces two equal gametes, because all of them have different segments of the homologous chromosomes.

3 0
3 years ago
Identify the phases of Meiosis II described below. Dyads are lined up by spindle fibers. Nuclear envelope forms around each set
andrew11 [14]
The answer to this question is metaphase II, Telophase II, Anaphase II and Prophase (in that order)
5 0
3 years ago
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the reaction involved in cellular respiration is similar to that involved in the burning of fossil fuels. What must be an essent
Len [333]
The answer is carbon. I hope this helps :)
8 0
2 years ago
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Which of the following is not a type of variable in a scientific experiment? A. Independent B. Control C. Dependent D. Observati
shepuryov [24]

Answer: I think it is D

Explanation:

We learned this already and I dont remember doing d

4 0
3 years ago
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