Does geographical isolation of individuals of a species lead to formation of a new species? Provide a suitable explanation...

The pistil is intact. Cross pollination has occurred leading to fertilisation and formation of fruit.

Fewer individuals in a species impose extensive inbreeding among them. This limits the appearance of variations and puts the species at a disadvantage if there are changes in the environment....

(a) The woman produces ova with ‘X’ chromosome (b) The man produces sperms with X and Y chromosome which actually determines the sex of the baby.

Yes, geographical isolation gradually leads to genetic drift. This may impose limitations to sexual reproduction of the separated population. Slowly the separated individuals will reproduce among themselves and generate new...

Geographical isolation can prevent the transfer of pollens among different plants. However, since the plants are self-pollinating, which means that the pollens are transferred from the anther of one flower...

Geographical isolation prevents gene flow between populations of a species whereas asexual reproduction generally involves only one individual. In an asexually reproducing organism, variations can occur only when the copying...

It is true that many apomicts posses normal looking embryo sacs. The only possibility of the embryo sac possessing diploid cells is due to failure of meiotic division at the...

Geographical isolation will not be a major factor for the speciation of a self-pollinating plant species because it does not have to look to other plants for its process of...

Geographical isolation will not be a major factor in the speciation of an organism that reproduces asexually, because it does not require any other organism to carry out reproduction.

(b) Smelting units and paints are the source of the lead poisoning.