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Yakvenalex [24]
3 years ago
9

Which of the following statements correctly describes the effect a nonsense mutation would have on a gene?a) It changes an amino

acid in the encoded protein.b) It alters the reading frame of the mRNA.c) It introduces a premature stop codon into the mRNA.d) It has no effect on the amino acid sequence of the encoded protein.
Biology
1 answer:
TEA [102]3 years ago
3 0

Answer:

c) It introduces a premature stop codon into the mRNA

Explanation:

Nonsense mutation is a type of point mutation (single nucleotide base is changed) which leads to premature stop codon. Stop codons are also called nonsense codons and that is way this type of mutation is called nonsense mutation. As a consequence, synthesized protein is incomplete and shorter than it should be (truncated protein), usually nonfunctional.

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Readme [11.4K]

Answer:

b

Explanation:

7 0
3 years ago
In certain mice, long tails (T) are dominant over short tails (t). If 2 hybrid mice mate, what will the outcome be?
yuradex [85]

Answer:

3 long tails : 1 short tail

Explanation:

This question involves a single gene coding for tail length in mice. The allele for long tail (T) is dominant over the allele for short tail (t). This means that an heterozygous mice will possess the long tail length.

According to this question, in a cross between two hybrid or heterozygote mice i.e. Tt × Tt, the following gametes will be produced by each parent:

Tt - T and t

Using these gametes in a punnet square (see attached image), the following will be produced: TT, Tt, Tt and tt.

Offsprings with genotype TT, Tt and Tt will have a LONG TAIL while genotype  tt will have a SHORT TAIL. Hence, the phenotypic ratio will be 3 long tails : 1 short tail.

7 0
3 years ago
Which of the following accurately compares nearsightedness and farsightedness? (1.0 points)
Kisachek [45]

Answer:

C

Explanation:

Nearsightedness is what happens when the image does not reach the retina whereas farsightedness happens when light is focused beyond the retina.

7 0
3 years ago
Choose the term that best completes each sentence. 1. An individual with two identical alleles for a gene is ________ for that g
sineoko [7]

Answer:

1. homozyous

2.heterozygous

3.phenotype

4.mutant

5.dominant

Explanation:

3 0
3 years ago
The atlantic ocean is growing in size by about one centimeter per year. how does an ocean become larger?
kari74 [83]

Answer:

a

Explanation:

The oceans become larger because of sea-floor spreading.

5 0
3 years ago
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