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4.Principles of Inheritance and Variation
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All sons of a couple are colourblind because
A
Mother is homozygous colourblind
B
Mother is heterozygous and father normal
C
Mother is heterozygous and father colourblind
D
Mother is normal and father colourblind
Solution
(a)Whenever mother is homozygous colour blind, all her sons will be colourblind irrespective of their father's nature.
Standard 12
Biology
Similar Questions
:Match the columns :
| Column $I$ |
Column $II$ |
| $(1)$ Albinism | $(p)$ recessive gene represented by HbsHbs. |
| $(2)$ Phenyl Ketonuria |
$(q)$ recessive gene represented by cc. |
| $(3)$ Sickle cell anaemia |
$(r)$ recessive gene represented by aa. |
| $4)$ Alkaptonuria | $(s)$ recessive gene represented by pp |
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