Question

In cows, the allele for red fur (r) is dominant over the allele for white fur (r). the allele for a solid coat (s) is dominant over the allele for a spotted coat (s). a heterozygous solid, white cow is crossed with a pure breed spotted, red cat. what would the two possible allele combinations in the gametes of the heterozygous solid, white cow be?

Options:
a) Rs and rs
b) RS and rs
c) Rs and Rs
d) rs and rs

Answer 1

The heterozygous solid, white cow can produce gametes with the allele combinations Rs and rs, representing the alleles for red and white fur as well as solid and spotted coats.

Step-by-step explanation:

Possible Allele Combinations in the Gametes of the Heterozygous Solid, White Cow

The possible allele combinations in the gametes of a heterozygous solid, white cow are Rs and rs. Here, 'R' represents the dominant allele for red fur while the lowercase 'r' stands for the recessive allele for white fur. Similarly, 'S' signifies the dominant allele for a solid coat and lowercase 's' the recessive allele for a spotted coat. A heterozygous solid, white cow would have the genotype 'RrSs' and during gamete formation through meiosis, the possible combinations are Rs (solid red) and rs (spotted white), reflecting independent assortment.

Considering mendelian genetics, the phenotypic ratio patterns observed with different crosses can help us understand how these alleles might combine in offspring. The question, however, contains a typographical error - there is no such cross as a cow with a cat. Assuming this meant a cow with another cow, we'd be looking at Mendelian inheritance patterns.