Question

1 State the unit of hereditary material found in
2 What is meant by variations found in a population?
3 Name the plant Mendel selected for his experiments on genetics,
4 What is meant by pair of contrasting characters?
5 Where are genes located in an organism?
6 How is variation brought in the progeny in the sexually reproducing
organisms?​

Answer 1

Answer:

2)Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).

Explanation:

3)mendel carried out his experiments using the garden pea, Pisum sativum, because it makes a convenient system for studies of inheritance. In pea plants we can easily produce true-breeding lines.

4)The pair of contrasting characters means a single character exhibit two opposite different character. For example if we considered height, the contrasting trait will be short and tall. Explanation: This concept of pair of contrasting traits exhibited by the pea plant was used by the Mendel to study genetics.

5)Genes are found on tiny spaghetti-like structures called chromosomes (say: KRO-moh-somes). And chromosomes are found inside cells. Your body is made of billions of cells.

6)During sexual reproduction two different parent i.e. male and female take part as a result of which the newly formed zygote possess genetic material of both parents. It leads to interchange of genetic information between two gametes which is passed to the progeny and develops variation.