NEET BIOLOGY

Detailed explanation-1: -Correct option is A) A person’s skin color, hair color, dimples, eye color, and blood type are all examples of genetic variations that can be seen in the human population. People with blue eyes have one allele of the gene for eye color, whereas people with gray eyes will have a different allele of the gene.

Detailed explanation-2: -Examples of genetic variation in humans include blood group, skin colour and natural eye colour. Whether you have lobed or lobeless ears is due to genetic causes. Biological sex is also an inherited variation-whether you are male or female is a result of genes you inherited from your parents.

Detailed explanation-3: -In the most elementary form, the inheritance of eye color is classified as a Mendelian trait. On the basis of the observation of more than two phenotypes, eye color has a more complex pattern of inheritance. Eye color ranges include varying shades of brown, hazel, green, blue, gray, and in rare cases, violet and red.

Detailed explanation-4: -The inheritance of eye color is more complex than originally suspected because multiple genes are involved. While a child’s eye color can often be predicted by the eye colors of his or her parents and other relatives, genetic variations sometimes produce unexpected results.

Detailed explanation-5: -There is evidence that as many as 16 different genes could be responsible for eye color in humans; however, the main two genes associated with eye color variation are OCA2 and HERC2, and both are localized in Chromosome 15.