How can the chromosomes be identified?

$(a)$ Why do we say that homozygous plants produce pure progeny?
$(b)$ Define heterozygous.
$(c)$ Explain how the process of speciation takes place.

Who was the first scientist to perform a series of experiments to study acquired and inherited traits?

The continuity of features from one generation to another is known as

Which factor conducts the expressive genetic information from one generation to another?

Does the genetic combination of mothers play a significant role in determining the sex of a newborn?