| 1 |
Genes are located on |
Chromosomes
Nucleus
Centrosomes
Cell membrane.
|
| 2 |
The basic physical and functional unit of heredity is called. |
DNA
RNA
Centronere
Gene
|
| 3 |
The transmission of characteristics from parents to off spring is called. |
Heredity
Inheritance
Non-inheritance
Both a and b
|
| 4 |
During reproduction, living things pass their characteristics to their. |
Parents
Grand parents
Off spring
Brother and sister
|
| 5 |
Zygote is formed by the fusion of. |
Two sperm cells
Two egg cells
Two somatic cells
Sperm cell andegg cell
|
| 6 |
In humans, a sperm has 23 chromosomeds. Egg cell has. |
23 chromosomes
46 chromosomes
No chromosomes
69 Chromosomes
|
| 7 |
Reduction of chromosomes takes place during. |
Mitosis
Meiotic -I
Meiotic -II
Both mitosis and meiotic -II
|
| 8 |
An event that occurs during interphase. |
Division of nuclesu
Duplication of chromosomes
Division of cytoplasm
Formation of cell wall
|
| 9 |
The characters which are passed from parents to off spring. |
Environmental characters.
Naturla characters
Non -inheritable characters.
Hereditary characters.
|
| 10 |
Chromosoems are made of. |
DNA only
DNA, Proteins and fats
Proteins only
DNA, and proteins
|
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