(i) Is the trait recessive or dominant? |
(ii) Is the trait sex - linked or autosomal? |
(iii) Give the genotype of the parents. |
Answer:
This disease is controlled by a single pair of allele \[H{{b}^{A}}\] and \[H{{b}^{S}}\]. Only homozygous individuals for\[H{{b}^{S}}\]i.e. \[H{{b}^{S}}H{{b}^{S}}\]. Show the diseased phenotype. The heterozygous individuals are carriers \[(H{{b}^{A}},\,\,H{{b}^{S}})\]. Therefore. (i) the trait is recessive. (ii) the trait is autosomal in nature because its gene is present on autosomes. (iii) the parents are heterozygous. The genotype of the parents would be\[H{{b}^{A}}H{{b}^{S}}\,\,and\,\,H{{b}^{A}}H{{b}^{S}}\].
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