Question

Who proposed the chromosomal theory of inheritance?

Answer 1

Chromosomal theory of inheritance:

1. The chromosomal theory of inheritance was proposed by Boveri and Sutton.
2. It states that the genes are located at specific positions on chromosomes and that the action of the chromosomes during meiosis helps explain Mendel’s laws of heredity.
3. Chromosomes are the thread-like structures of nucleic acids and proteins that are found within the nucleus of living cells and are primarily involved in the inheritance of genetic information.

Observations of chromosomal theory of inheritance:

1. During the meiotic cell division, the pairs of homologous chromosomes move as separate structures that are usually independent of the other pairs of chromosomes.
2. Each homologous pair's pre-gametes contain a random distribution of chromosomes.
3. Each parent produces gametes, which make up half of their chromosome complement.
4. Despite the fact that male and female gametes have different sizes and morphologies, they both have the same number of chromosomes, allowing for equal genetic contributions from both the parents.
5. During feralization, the gametic chromosomes combine to produce offspring with the same number of chromosomes as their parents.