If two persons with 'AB' blood group marry and have a sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in 1: 2:1 ratio. The modern technique of protein electrophoresis reveals the presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of
Correct answer: C. Co-dominance
- A. Partial dominance
- B. Complete dominance
- C. Co-dominance
- D. Incomplete dominance
Explanation
The phenomenon of expression of both alleles in a heterozygote is called co-dominance. The alleles that do not show dominancerecessive relationships and are able to express themselves independently when present together are called codominant alleles. As a result, the heterozygous condition has a phenotype different from either of the homozygous genotypes, e.g., alleles for blood group A (IA) and for blood group B (IB) are codominant so that when they come together in an individual, they produce blood group AB.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
Practise Inheritance
1,238 free Inheritance MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Inheritance questions
Which of the following cannot be detected in a developing fetus by amniocentesis?
Select the incorrect statement with regard to hemophilia:
A human female with Turner's syndrome:
Which idea is depicted by a cross in which the F1 generation resembles both the parents?
Which one is the incorrect statement with regard to the importance of pedigree analysis?
A normal-visioned man whose father was colour-blind marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind?