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4.Principles of Inheritance and Variation
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The amino acid substituted in sickle cell anaemia is
A
Glutamic acid for valine in the alpha chain
B
Glutamic acid for valine in the beta chain
C
Valine for glutamic acid in the alpha chain
D
Valine for glutamic acid in the beta chain
Solution
(d)The sixth amino acid in $\beta – $chain of normal haemoglobin is glutamic acid. In sickle cell haemoglobin this amino acid is replaced by valine.
Standard 12
Biology
Similar Questions
Match the following – (w.r.t. Pedigree analysis)
| Column $-I$ | Column $-II$ |
| $a.$ Solid symbol | $(i)$ Carrier of sex linked trait |
| $b.$ Horizontal line between symbols | $(ii)$ Offspring |
| $c.$ Horizontal line above the symbols | $(iii)$ Trait to be studied |
| $d.$ Dot in centre | $(iv)$ Parents |
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