Question

In white tigers, the absence of fur pigmentation is caused by a recessive allele that also causes the tigers to be cross-eyed. If two tigers heterozygous for this allele mate, what do you expect to see among the offspring?

Answer 1

Answer:

25% unaffected

50% are carriers of the gene

25% have white fur

Explanation:

Let W be the dominant, normal fur Gene and w be the recessive white fur Gene. Recessive needs two of the same alleles to appear. *Also see image*

Answer 2

If two tigers that are heterozygous for the allele are crossed, 25% of the resulting offspring will lack fur pigmentation and appear cross-eyed.

The absence of fur pigmentation + cross-eye is recessive. Let the allele be f, the alternate form would be F.

Heterozygous tigers will have the genotype Ff each.

              Ff    x    Ff

            FF    Ff   Ff   ff

Since the allele is recessive, the traits it conditions can only be expressed when it is homzygous, ff.

Thus, 1/4 or 25% of the offspring will lack fur pigmentation and be cross-eyed while the remaining 75% will have alternate traits.

More on monohybrid cross can be found here: https://brainly.com/question/1185199