Question

Give any two causes of variations.

Answer 1

Definition:

• The variations are the differences in the traits or the characteristics among the members of a species.

Major causes of variations:

Crossing over:

• The crossing over is the reshuffling of the genetic material between the two homologous chromosomes.
• The crossing-over takes place during meiosis.
• Meiosis occurs during gamete formation in sexually reproducing organisms.

Mutation:

• The mutation is defined as the sudden change in the sequence of DNA (Deoxyribose nucleic acid)