Question

/'Only advantageous variations will help in the evolution of an organism giving rise to a new species.'/ Explain with the help of examples.

Answer 1

Dear student,

Variation in a species can promote survival by producing change in their

• behaviour (e.g. adaptability in different organisms according to their environment.)
• appearance (e.g. colour change in beetles)
• function (e.g.vestigial organs which have lost their function or some organs which have been gained in order to function in a better way )

Various factors can lead to the rise of new species. For e.g.

• Genetic drift
• Natural selection
• Geographical isolation.

Regards.