4 questions · timed · auto-graded
| Column ‘A’ | Column ‘B’ |
| (1) Tay-Sachs disease | (a) Multifactorial disorder |
| (2) Diabetes | (b) Destruction of erythrocytes |
| (3) Sickle-cell anaemia | (c) Absence of melanin |
| (4) Albinism | (d) Monogenic disorder |
| Column ‘A’ | Column ‘B’ |
| (1) Yellow and rinkled | (a) yyrr |
| (2) Green and round | (b) YyRr |
| (3) Yellow and round | (c) YYrr |
| (4) Green and wrinkled | (d) yyRr |
| Column 1 | Column 2 | Column 3 |
| (1) Leber hereditary optic neuropathy | (a) 44 + XXY | (i) Pale skin, white hairs. |
| (2) Diabetes | (b) 45 + X | (ii) Men are sterile. |
| (3) Albinism | (c) Mitochondrial disorder | (iii) Women are sterile. |
| (4) Turner syndrome | (d) Polygenic disorder | (iv) This disorder arises during development of zygote. |
| (5) Klinefelter Syndrome | (e) Monogenic disorder | (v) Effect on blood- glucose level. |
a. Hereditary characters are transferred from parents to offsprings by …………………………….., hence they are said to be structural and functional units of heredity.
b. Organisms produced by …………………………….. show minor variations.
c. The component which is in the nuclei of cells and carries the hereditary characteristics is called ……………………………..
d. Chromosomes are mainly made up of ……………………………..
e. Organisms produced through …………………………….. show major variations.