In dragons, a round head dominates over an oval one. When crossing round-headed dragons, 42 oval-headed

In dragons, a round head dominates over an oval one. When crossing round-headed dragons, 42 oval-headed and 126 round-headed dragons were bred, which is a manifestation of the law: a) dominance; b) splitting; c) uniformity; d) gamete frequency.

Let’s designate the gene that causes the development of a round head in dragons as K, then the gene that leads to the development of an oval head in a homozygous state will be designated as k.

In the offspring of dragons, a splitting of the 3: 1 type was obtained, which is characteristic of the crossing of two individuals that are heterozygotes – Kk. Such dragons will have round heads and produce k and K germ cells. When crossed, all possible offspring would theoretically look like this:

baby dragons with round heads – 75% (KK – 25% and Kk – 50%);

cubs with oval heads (kk) – 25%.

Answer: b) the law of splitting.