Mention three important features of fossils which help in the study of evolution.

Name any five vegetables generated from a common ancestor through artificial selection rather than natural selection. Also,mention the features for which each vegetable is selected.

$A$ pea plant with blue colour flower denoted by $BB$ is cross-bred with a pea plant with white flower denoted by $ww$.
$(a)$ What is the expected colour of the flowers in their $F_{1}$ progeny?
$(b)$ What will be the percentage of plants bearing white flower in $F_{2}$ generation,when the flowers of $F_{1}$ plants were selfed?
$(c)$ State the expected ratio of the genotypes $BB$ and $Bw$ in the $F_{2}$ progeny.

Select the group which shares the maximum number of common characters.

It is a commonly held misconception that the mother's egg is responsible for determining whether the baby will be a boy or a girl. But actually,it is the father's sperm that decides this. Which of the following makes the sperm the decisive factor?

$(i)$ Name the scientist who proposed the theory of evolution of species by natural selection.
$(ii)$ What conclusion did Mendel draw from his experiments regarding traits?
$(iii)$ Arrange the following organisms in the order of their evolutionary complexity: Cockroach,Mango tree,Gorilla,Fish.