Prabin Kalikote

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Asked Questions

How is sex determined in human beings? Describe in brief.

Sex chromosomes are responsible for the determination of sex in human body. Sex is determined by the genetic inheritance. Sex chromosomes that carries genes for male characters are Y and female Y. So,

What are sex chromosomes? How do they differ from autosomes?

The chromosomes that carry gene for the sexual characters called sex chromosomes.
Chromosome of this type is different from autosomes is that autosomes determines various characteristics of the body where as sex chromosomes determines sex of an individual.

Write down the chromosomes in diploid and haploid cell of human, pea, onion and rice.

Name	Diploid	Haploid
Human	23 pairs	23
Pea	7 pairs	7
Onion	8 pairs	8
Rice	12 pairs	12

Write 3 functions of chromosomes.

Any 3 functions of chromosomes are:
- It acts as a hereditary vehicles.
- It control protein synthesis, cell growth and cell-repair.
- It forms link between parents and their off-springs.

What is a haploid cell?

The gametes cell that contains haploid number of chromosomes is called haploid cell.

What is diploid cell? Write down the number of chromosomes in the diploid cell of a gorilla, pine and frog.

The somatic cells that contains the diploid number of chromosomes is called diploid cells. The number of chromosome in the diploid cell of a gorilla, pine and frog are:
        Gorilla: 24
        Pine: 12
  Frog: 13

What are acrocentric and telocentric chrosomes?

Acrocentric chromosomes are the chrosomes in which the centromere is located away from the center.
Telecentre chromosomes are the chrosomes in which the centromere is located at the end of chromatids.