R r r r d. X cc cc. Cc d. Cc. F
Researchers selected candidate genes by identifying homozygous tracts shared by all three siblings along with the parental phenotype, this type of study is applied for the inheritance of recessive genes. Since the recessive genes can not be expressed in heterozygous genotype, the back tracking of carriers and homozygous recessive individual will help understand its inheritance pattern. The inheritance of dyt2 can be autosomal recessive. It is usually passed on to progeny of two carriers.
Answer:
D/4
Explanation:
Hom-zygous recessive is both genes are recessive/tt
Hom-zygous dominate is both genes are dominate/TT
Heterozygous is 1 gene is dominate the other is recessive/Tt
