Principles of Inheritance and Variation questions
1199 published questions with worked solutions.
- After a mutation at a genetic locus the character of an organism changes due to the change in :-
- Which one of the following is an example of polygenic inheritance ?
- In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was...
- Test cross involves-
- If a colourblind woman marries a normal visioned man, their sons will be -
- Cri-du-chat syndrome in humans is caused by the-
- Both sickle cell anemia and Huntington's chorea are-
- One gene - one enzyme relationship was established for the first time in:
- Inheritance of skin colour in humans is an example of:
- A common test to find the genotype of a hybrid is by:
- Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are...
- A human male produces sperms with genotypes AB, Ab, aB and ab pertaining to two diallelic characters in equal proportions. What...
- Haploids are more suitable for mutation studies than the diploids. This is because
- Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
- Point mutation involves:
- A cross in which an organism showing a dominant phenotype is crossed with the recessive parent in order to know its genotype is...
- In Antirrhinum two plants with pink flowers were hybridized. The F_1 plants produced red, pink and white flowers in the...
- The fruit fly Drosophila melanogaster was found to be very suitable for experimental verification of chromosomal theory of...
- ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many...
- Which one of the following cannot be explained on the basis of Mendel's Law of Dominance
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