绵羊群中,基因型为HH的个体表现为有角,基因型为hh的个体表现为无角,

Sheep population, genotype individual performance HH is angular, hh genotype individual performance is no angle, Hh genotype of a <br>body, expressed as Horned Rams, ewes showed no angle. There are now an angle a polled rams and ewes mated, Fl the rams <br>are angles, no angle ewes. Let F1 <br>rams and ewes random mating obtain F2, F2 <br>ram's horn sheep have accounted for 3/4, ewes have

In sheep herds, individuals with hH genotype are shown to have horns, individuals with hh genotype are shown to be hornless, and the genotype is Hh."<br>Body, the ram is shown to have horns, and the sheep is shown to be hornless. Now a horned male sheep is mated with a hornless female sheep, the f1 ram<br>There are horns, and all sheep have no horns. Let F1<br>In the ram and the female random mating obtains F2, F2<br>Horned sheep account for 3/4 of the rams, and

In sheep group, individuals with HH genotype have horns, individuals with HH genotype have no horns, and individuals with HH genotype have HH genotype<br>Body, male performance for horned, ewe performance for hornless. Now a horned ram is mated with a hornless ewe, F1 middle male<br>All have horns, and all ewes have no horns. Let F1<br>F2, F2 obtained by random mating between male and female sheep in<br>3 / 4 of rams have horns, and 3 / 4 of ewes have horns