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

In a dihybrid cross of plants having yellow round and green wrinkled seeds,$16$ combinations were found. What type of plants were found in the following ratios?

The theory of evolution of species by natural selection was given by

In dogs, the barking trait is dominant over the silent trait and erect ears are dominant over drooping ears. Now, find out
$(i)$ What is the expected phenotypic ratio of the offspring when dogs, heterozygous for both the traits are crossed?
$(ii)$ What are different phenotypes observed?
$(iii)$ What is this type of cross known as?

$A$ cross between a tall plant $(TT)$ and a short pea plant $(tt)$ resulted in progeny that were all tall plants because

An organ like a wing in birds is an advantage to an organism. Did they appear in different stages or were they formed due to a single sudden change?