If two giraffes were crossed, where one is heterozygous for albinism (a) and the other has a homozygous dominant genotype, what would be the expected genotypic and phenotypic ratios?

a) 2 AA: 2 Aa: 0 aa; all pigmented
b) 1 AA: 2Aa: 1aa; 3 pigmented: 2 albino
c) 2 AA: 2 Aa: 0 aa; 4 pigmented: 2 albino
d) 2 AA: 0 Aa: 0 aa; all pigmented
e) 0 AA: 0 Aa: 1 aa; all albino


Ans: a) 2 AA: 2 Aa: 0 aa; all pigmented

Biology & Microbiology

You might also like to view...

Clay in soils represents a trade-off in nutrient availability, such that _____

A) anions are less likely to leach out of soil and are difficult for plants to extract B) cations are less likely to leach out of soil and are difficult for plants to extract C) nitrogen levels are exceptionally high, but much of the nitrogen leaches away D) oxygen levels are exceptionally high, but much of the nitrogen leaches away

Biology & Microbiology

Geosmins are

A. a strain of Bacillus. B. nitrogen-fixing bacteria. C. metabolites that give soil its odor. D. produced by Rhizobium. E. metabolites that give soil its odor AND produced by Rhizobium.

Biology & Microbiology

The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger length. Assume that a female with brachydactyly in the heterozygous condition is married to a man with normal fingers

What is the probability that (a) their first child will have brachydactyly? (b) their first two children will have brachydactyly? (c) their first child will be a brachydactylous girl?

Biology & Microbiology

The D line, which is used to designate the refractive index, indicates _____.

What will be an ideal response?

Biology & Microbiology