Which of the following example shows over dominance?
a) height in garden pea
b) flower color in 4 O’clock plant
c) ABO blood group
d) drosophila eye pigment
What will be the phenotype of eye color in drosophila when true breeding w+/w+ cross with true breeding w/w?
a) all the drosophila flies will have normal red eyes
b) all the drosophila will have more quantity of florescent pigments in eyes
c) all the drosophila flies will have white eyes
d) all of these
Explanation: it is due to over dominance in which heterozygous w+/w become more intense than wild type w+/w+
What will be the phenotype of eye color in drosophila when true breeding w+/w+ cross with true breeding w/w?
a) all the drosophila flies will have w+/w+
b) all the drosophila flies will have w/w
c) all the drosophila will have w+/w
d) half will have w+/w and half will have w+/w+
Explanation: because it is F1 generation and all will be heterozygous w+/w
Which of the
following is the form of a gene which codes for one possible outcome of a
phenotype?
a) protein
b) genome
c) DNA
d) allele
How many alleles for pod color were present in Mendel investigations?
a) two
b) three
c) four
d) many
Explanation: one allele for yellow pods and form other forms green pods
How many alleles for seed color were present in Mendel investigations?
a) two
b) three
c) four
d) many
Explanation: one allele for yellow seed (Y) and other for green seed (y)
