Why is the answer D?
Ok first let’s have a quick idea on the wordings,
- Gene-A part of a DNA which codes for a specific protein.(For example, a gene might code for an enzyme that affects flower color.)
- Allele-Alternative versions of a gene
- Character-A heritable feature that varies among individuals, such as
flower color. - Trait-Each variant for a character, such as purple or white color for flowers
So here,
Statement 1-If the character is color of the hair follicle which is determined by a protein coded by a specific gene only. So this is correct.
Statement 2- This is a tricky one because we tend to think different hair color, different alleles but NO. All hair follicles have same alleles but differently expressed. So, Statement 2 is incorrect because it assumes the alleles themselves are different. The difference in hair color is due to gene expression, not a difference in the alleles themselves. Some cells may express certain genes while others do not, leading to different phenotypes (in this case, hair color), but the alleles remains the same.
Statement 3-Here we can’t directly say that white hair follicle has two recessive alleles as it’s not mention anywhere. So this is incorrect as well.