A pleiotropic gene:
A pleiotropic gene:
Options
(a) is a gene evolved during Pliocene (b) controls a trait only in combination with another gene (c) controls multiple traits in an individual (d) is expressed only in […]
Genetics
A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the
A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offsprings?
Options
(a) A,B and AB only (b) A,B,AB and O […]
A man whose father was colour blind marries a woman who had a colour blind
A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind ?
Options
A human female with Turner’s syndrome:
A human female with Turner’s syndrome:
Options
(a) has 45 chromosomes with XO (b) has one additional X chromosome. (c) exhibits male characters (d) is able to produce children with normal husband.
Correct […]
A gene showing codominance has:
A gene showing codominance has:
Options
(a) alleles tightly linked on the same chromosome (b) alleles that are recessive to each other (c) both alleles independently expressed in the heterozygote (d) one allele […]
A colour blind man marries a woman with normal sight who has no history of colour
A colour blind man marries a woman with normal sight who has no history of colour blindness inher family. What is the probability of their grandson being colour blind ?
Options
(a) 1 […]
DNA synthesis can be specifically measured by estimating the incorporation
DNA synthesis can be specifically measured by estimating the incorporation of radio-labelled
Options
(a) uracil (b) adenine (c) thymine (d) deoxyribose sugar
Correct Answer:
thymine
Explanation:
Autoradiography is the study of labelled precursors […]
Down’s syndrome is caused due to an extra chromsome in
Down’s syndrome is caused due to an extra chromsome in
Options
(a) 12 ͭ ͪ chromosome (b) 21 ͭ ͪ chromosome (c) sex-chromosome (d) 2ⁿᵈ chromosome
Correct Answer:
21 ͭ ͪ chromosome
Explanation: […]
During DNA replication, the term leading strand is applied to the one which replicates
During DNA replication, the term leading strand is applied to the one which replicates in
Options
(a) 5′ → 3′ direction discontinuously (b) 3′ → 5′ direction continuously (c) 5′ → 3′ direction […]
Escherichia coli with completely radioactive DNA was allowed to replicate in
Escherichia coli with completely radioactive DNA was allowed to replicate in non-radioactive medium for two generations. Percentage of bacteria with radioactive DNA is
Options
(a) 50% (b) 12.50% (c) 100% (d) 25%
Correct […]