If the fossil of an organism is found in the deeper layers of the earth,then we can predict that:

Why did Mendel choose the pea plant $(Pisum \text{ } sativum)$ for his experiments?

$A$ cross was carried out between a pure-bred tall pea plant and a pure-bred dwarf pea plant,and $F_{1}$ progeny was obtained. Later,the $F_{1}$ progeny was selfed to obtain $F_{2}$ progeny. Answer the following questions:
$(a)$ What is the phenotype of the $F_{1}$ progeny and why?
$(b)$ Give the phenotypic ratio of the $F_{2}$ progeny.
$(c)$ Why is the $F_{2}$ progeny different from the $F_{1}$ progeny?

In human males and females, how many pairs of chromosomes are identical?

An individual can pass on to its progeny the experiences of its lifetime.

Mendel observed a contrasting trait in relation to the position of flowers. Mention that trait.