In test cross, which of the following individual for two traits is back crossed with its recessive parent (P1)?
a) homozygous dominant
b) heterozygous
c) homozygous recessive
d) all of these
What will be the ratio among offspring of test cross between a heterozygous individual and homozygous recessive parent when there is no linkage?
a) 1:3:3:1
b) 1:2:3:4
c) 9:3:3:1
d) 1:1:1:1
In a test cross between a heterozygous individual and homozygous recessive parent, if all four phenotypic combinations (parental and recombinants) are produced in1:1:1:1, then there would be………between the genes.
a) incomplete linkage
b) no linkage
c) complete linkage
d) none of these
In a test cross between a heterozygous individual and homozygous recessive parent, if more parental types and less recombinant types are produced, then there would be………between the genes.
a) no linkage
b) incomplete linkage
c) complete linkage
d) none of these
In a test cross between a heterozygous individual and homozygous recessive parent, if only parental types are produced, then there would be……… between the genes.
a) incomplete linkage
b) no linkage
c) complete linkage
d) none of these
Who observed the linkage phenomenon in Drosophila?
a) Carl Correns
b) Bernstein
c) T.H. Morgan
d) Karl Landsteiner
Explanation: Thomas Hunt Morgan was an American evolutionary biologist, geneticist, embryologist, and science author who won the Nobel Prize in Physiology or Medicine in 1933 for discoveries elucidating the role that the chromosome plays in heredity
