The two versions of a trait (character) which are brought in by the male and female gametes are situated on

"The chromosome number of the sexually reproducing parents and their offspring is the same." Justify this statement.

If fossils of an organism are found in the deeper layers of the Earth,what can we predict about its extinction?

The genotype of a green-stemmed tomato plant is denoted as $GG$ and that of a purple-stemmed tomato plant as $gg$. When these two are crossed:
$(i)$ What colour of stem would you expect in their $F_1$ progeny?
$(ii)$ Give the percentage of purple-stemmed plants if $F_1$ plants are self-pollinated.
$(iii)$ In what ratio would you find the genotypes $GG$ and $Gg$ in the $F_2$ progeny?

Select the correct statement.

What is the probability percentage of a zygote developing into a male or female offspring in humans?