Organisms phenotypically similar but genotypically different are said to be…..
a) heterozygous
b) monozygous
c) homozygous
d) multizygous
Explanation: for example Tt (tall)
In a dihybrid cross, how many homozygous offspring can be produced?
a) 2
b) 4
c) 3
d) 9
Explanation: RRYY, RRyy, rrYY and rryy
An individual with contrasting alleles is called……..
a) heterozygous
b) monozygous
c) homozygous
d) multizygous
Law of independent assortment cannot be applied on……..
a) dominant genes
b) linked genes
c) recessive genes
d) autosomal genes
Two organisms are mated; one is homozygous dominant for one trait and homozygous recessive for another. The other is heterozygous for both traits. How many phenotype/s are expected?
a) 1
b) 3
c) 2
d) 9
In a cross between two individuals that are heterozygous for a recessive lethal allele. What genotypic ratio (homozygous dominant: heterozygous: homozygous recessive) would you expect observe in the offspring?
a) 0:2:1
b) 1:2:1
c) 3:1:2
d) 3:1:0
