How many gene pairs at different loci contribute to the wheat grain colour?
a) two
b) three
c) four
d) seven
Explanation: Aa, Bb and Cc gene pairs
Which of the following allele codes for red pigment in wheat grain?
a) A
b) B
c) C
d) all of these
Explanation: all of these codes for an equal amount of red pigment which is a positive effect
Which of the following allele does not code for red pigment in wheat grain?
a) a
b) b
c) c
d) all of these
Explanation: all of these does not code for any red pigment which is a negative effect
What will be the phenotype of wheat grain (colour) if all the six alleles for grain colour are dominant i.ie AABBCC?
a) dark red
b) moderately dark red
c) light red
d) red
What will be the phenotype of wheat grain (colour) if none of the six alleles for grain colour are dominant i.ie aabbcc?
a) light pink
b) moderately dark red
c) light red
d) white
Which of the following genotype/s for wheat grain colour will produce light pink phenotypes?
a) Aabbcc
b) AaBbcc
c) aabbCc
d) all of these
Explanation: in all the above genotypes, a single allele out of sic encodes for red colour so the colour will be light pink
