New species may be formed if

i. DNA undergoes significant changes in germ cells

ii. chromosome number changes in the gamete

iii. there is no change in the genetic material

iv. mating does not take place

A zygote which has an X-chromosome inherited from the father will develop into a

Select the incorrect statement

Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have new combination of characters. Choose the new combination from the following

i. Round, yellow

ii. Round, green

iii. Wrinkled, yellow

iv. Wrinkled, green

A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?