Question

2. The degree how is for a rare species of antelope being bred in captivity. Populations of Sable antelope in Africa are in decline due to loss of habitat, and increased spread of disease a frequent drought. Conservationists are trying to breed more antelope in the hope of releasing m i nto the wild, so they can increase the size of wild populations. Since people started pred sable antelope in captivity, they found a mutant phenotype arise: antelope without horns (wild antelope have horns). Hornless antelope are of great concern because these may not survive well if released into the wild (horns allow them to fight off predators, compete for breeding partners and for food). In the pedigree below, normal antelope have horns; shaded individuals are horness. The trait does not seem to be ex a me. By using the pedigree below, help the breeders understand the inheritance pattern of this mutant allele so they can avoid breeding individuals that may have this detrimental altele. In your examples, use allele "W er "h" to symbolize the alleles (you define what they code for, and if they are dominant or recessive) Generation 1 Generation 11 O HTO Generation 11 Generation IV a. Is the hornless trait dominant or recessive? Recessives b. What is/are the possible genotypes for individual 1-5? C. If N-5 and 6 have another offspring what is the probability that it will be normal (i.e. It will have horns? d. (1 pt) if I-1 and ill-2 have an offspring, what is the probability that it will be hornless?

Answer 1

a. The hornless trait is dominant.

b. HH

c. III-5 x III-6

Hh x hh

	H	h
h	Hh	hh
h	Hh	hh

50% normal.

d. III- 1 x III-2

HH x hh

	H	H
h	Hh	Hh
h	Hh	Hh

100% hornless