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ankoles [38]
3 years ago
7

A researcher has identified a mutant strain of yeast whose histones are unable to be acetylated. Which of

Biology
1 answer:
d1i1m1o1n [39]3 years ago
4 0

Answer:

The correct answer is c the mutant will show decreased levels of gene expression.

Explanation:

Histone acetyl transferase is an enzyme that helps in the transfer of acetyl group to the epsilon -NH2 group of lysine reside of histone proteins that surrounds the DNA molecule of chromosome.

  This results to make the target DNA more assecible for transcription mediated by RNA polymerase resulting the gene expression.

 On the other hand the mutant in which histones are not acetylated,transcription rate decreases as the non acetylated DNA is less assecible to RNA polymerase.

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Interbreeding two different species of lovebirds produces offspring that are unable to build a nest after they mature because th
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The question is incomplete and the whole question is-

Interbreeding two different species of lovebirds produces offspring unable to build a nest after  they mature because they lack the innate knowledge needed to carry the nesting materials. The hybrid offspring do not reproduce, and this limits genetic mixing of the two species. This is an example of:

Answer:

The correct answer is- Hybrid infertility

Explanation:

When members of two different species reproduce and produce offspring, then these offsprings are called hybrid. If the hybrid offsprings are not able to produce viable gamete and do not able to reproduce then this is called hybrid infertility. One of the famous examples is mule produce by breeding between donkey and horse.

So here interbreeding of two species of lovebirds produces offspring that do not reproduce and lack innate knowledge needed to build the nest which limits the genetic mixing between the species due to hybrid infertility.

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