Deviations: incomplete dominance, co-dominance, multiple alleles, blood groups, pleiotropy, polygenic inheritance
Top questions
See all →- What is the pattern of inheritance for polygenic trait? Answer: 2. Non-mendelian inheritance pattern Key idea: Polygenic traits are controlled by many genes, each with a small additive effect, and... 1
- As per ABO blood grouping system, the blood group of father is B^+, mother is A^+ and child is O^+. Their respective genotype can beA. I^Bi / I^Ai / iiB. I^BI^B / I^AI^A / iiC. I^AI^B / iI^A / I^BiD. I^Ai / I^Bi / I^AiE. iI^B / iI^A / I^AI^BChoose th… Answer: 2. A only Key idea: a child with blood group O must be ii, getting one i allele from each parent. So both parents must carry i: fath... 1
- A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny? Answer: 3. Red flowered as well as pink flowered plants Key idea: Snapdragon shows incomplete dominance: RR is red, Rr is pink, rr is white.... 1
- The phenomenon of pleiotropism refers to Answer: 4. a single gene affecting multiple phenotypic expression. Key idea: Pleiotropy is the effect of a single gene on multiple phenotypi... 1
- Persons with ‘AB’ blood group are called as "Universal recipients". This is due to : Answer: 4. Absence of antibodies, anti-A and anti-B, in plasma AB blood group has antigens A and B on RBCs but has no anti-A or anti-B antib... 1
- Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups. Answer: 3. When I^A and I^B are present together, they express same type of sugar. Key idea: In AB blood group, I^A and I^B are codominant a... 1