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salantis [7]
3 years ago
5

A recessive allele in tigers causes the white tiger. If two normally pigmented tigers are mated and produce a white offspring, w

hat percentage of their remaining offspring would be expected to have normal pigmentation?
A) 50%
B) 75%
C) About 66%
D) About 90%
E) 25%
Biology
1 answer:
valentinak56 [21]3 years ago
3 0

Answer:

B (75%)

Explanation:

This a cross involving a single gene coding for pigment color in tiger. A recessive allele produces white pigment while the dominant allele produces normal pigment. Note that, a recessive trait (white pigment) will only be expressed when the recessive alleles are homozygous (ww).

Two normal pigmented tigers produced a recessive offspring (white) because both normal parents are heterozygous (Ww) i.e. contains both dominant and recessive alleles. Hence, a cross between two (Ww) parents will give rise to offsprings with WW, Ww, Ww and ww genotypes. The first three offsprings will be phenotypically normal pigmented i.e. 3/4 × 100 = 75%

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