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Principles of Inheritance and Variation
Question
Give one example of genetic trait for each of the following in humans : (i) Lethality (ii) Multiple allelism.
Solution
(i) Lethality : Sickle cell anaemia.
(ii) Multiple allelism : ABO blood groups.
Question
What for symbols AA and Aa stand ?
Solution
AA : Homozygous dominant, Aa : Heterozygous dominant.
Question
Mention the phenomenon of pleiotropy by giving an example.
Solution
Pleiotropy. When one gene controls more than one phenotypic character it is termed as pleiotropy.
Example : Sickle cell anaemia.
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Mock Test Series
Mock Test Series