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?

In which animal did the eyes originate first?

In human beings,the statistical probability of getting either a male or female child is $50 : 50$. Give a suitable explanation.

$A$ woman having blood group $B$ marries a man having blood group $A$ and they have four offspring. Two children have blood group $O$,one has blood group $B$,and one has blood group $AB$. Now,answer the following:
$(i)$ Which blood group is dominant?
$(ii)$ Which blood group is recessive?
$(iii)$ What are the genotypes of the parents?
$(iv)$ Show the possible genotypes and phenotypes of the offspring.

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?

Farmers generated different vegetables from wild cabbage by artificial selection. Name the vegetables obtained for the following desired traits:
$(i)$ Arrested flower development
$(ii)$ Sterile flowers
$(iii)$ Very short distances between leaves
$(iv)$ Swollen parts
$(v)$ Broader leaves