XX-XY type pattern of sex determination is found in ……
a) birds
b) butterfly
c) moths
d) all of these
…….traits are called holandric traits.
a) X-linked
b) Y-linked
c) autosomal
d) sex linked
Mendel’s law of independent assortment can be determined by……
a) test cross
b) back cross
c) monohybrid cross
d) dihybrid cross
Investigators do a dihybrid cross b/w two heterozygous and get about a 3:1 ratio among the offspring. The reason must be due to……..
a) polygenes
b) pleiotropic genes
c) linked genes
d) epistatic gene
Whether an allele is dominant or recessive depends on………
a) how common the allele is relative to other alleles
b) whether it is inherited from the mother or father
c) which chromosome it is on
d) whether it shows expression in heterozygous state or not
All the offspring of a white hen and a black rooster are grey. The simplest explanation for this pattern of inheritance is ……..
a) linkage
b) sex linkage
c) independent assortment
d) incomplete dominance
