Assertion: | A sex linked recessive disorders is expected to be more common in males than in females. |
Reason: | Males are hemizygous for sex chromosomes. |
Statement I: | Thalassemia is a qualitative problem of synthesising an incorrectly functioning globin. |
Statement II: | Sickle cell anaemia is a quantitative problem of synthesising too few globin molecules while the latter. |
I: | is an aneuploidy |
II: | causes infertility in affected females |
III: | does not affect the development secondary sexual characters in affected females |
1. | Polygenic inheritance | Haemophilia |
2. | Linkage | Drosophila |
3. | Incomplete dominance | Antirrhinum |
4. | Pleiotropy | Phenylketonuria |