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Fofino [41]
2 years ago
7

Which factors can prevent permanent fixation of an allele (i.e. maintain genetic diversity)? Hint: You're going to have to try d

ifferent values than just those presented in the exercise--try to keep both alleles present! a. Gene Flow b. Genetic Drift c. Natural Selection d. Mutation
Biology
1 answer:
aleksandr82 [10.1K]2 years ago
3 0

Answer:

Option D

Explanation:

Mutations are changes that occur in the DNA sequences as a result of environmental factors like exposure to some certain chemicals or radiation that can be passed down to the offspring and this increases genetic variations which can prevent permanent fixation of an allele.

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Explanation:

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2 years ago
many different types of mutations can occur within the body .cystic fibrosis is a genetic disorder that is caused by different m
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<h3>Question from alternative source</h3>

Many different types of mutations can occur within the body. Cystic fibrosis is a genetic disorder that is caused by different mutations within the CFTR gene. One mutation in the CFTR gene that leads to cystic fibrosis causes translation to end earlier in the gene sequence. Which type of mutation causes this translation error that leads to cystic fibrosis?

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Answer:

Nonsense

Explanation:

Nonsense mutations describe mutations that produce a premature stop codon. The stop codons are UAG, UAA, and UGA. A way in which this could arise is, for example, if there was a substution of a nucleotide in the mRNA codon UAC (which codes for the amino acid Tyrosine) to the nucleotide UAG (which codes for a stop codon).

The translation machinery would reach this codon, which signals that translation should be terminated. This would mean that the mRNA would be released, and a truncated (shortened) version of the amino acid would be produced. This is likely to be non-functional, and may even be marked for destruction by the cell.

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2 years ago
Which of the following choices correctly matches a tool and its proper application?
Alecsey [184]

Answer:

The correct answer is option A. "cell fractionation to study the function of specific organelles".

Explanation:

Cell fractionation is a scientific process used to study the function of specific organelles, which main idea is to fractionate the cells but preserving the individual function of the elements of the cell. Usually, the separation takes place by a centrifugation method. This methodology was developed to identify the location of the organelles within the cells, but nowadays is used to study its functions.

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no yo te ayudo si dime es

Explanation:

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Media that contains extracts from plants animals or yeasts are
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Complex. 
Hope this helps!
3 0
2 years ago
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