The Role of Alleles in Genetics and Traits

Alleles are matching genes inherited from each parent, forming pairs that can be identical or slightly different. These variations influence traits like eye color, health risks, and reactions to medications. Dominant alleles can override recessive ones, affecting observable traits. Our genotype, the genetic makeup, is determined by these allele pairs, impacting our physical appearance and daily life.

What are alleles?

• Different genes from different species

• Matching genes from both parents

• Genes that do not affect biological functions

• Identical genes from one parent

How do dominant alleles affect traits?

• They have no effect on traits

• They only affect hair color

• They are always recessive

• They can override recessive alleles

Which of the following is an example of a dominant allele?

• Allele for red hair

• Allele for green eyes

• Allele for brown eyes

• Allele for blue eyes

What is a genotype?

• A type of allele

• The physical appearance of an organism

• The genetic makeup determined by allele pairs

• A disease caused by alleles

How do alleles influence our health?

• They only determine eye color

• They have no impact on health

• They influence disease risk and medication reactions

• They only affect physical traits

What is the role of recessive alleles?

• They have no genetic function

• They are overridden by dominant alleles

• They always determine traits

• They are more common than dominant alleles

What is the primary function of alleles in our DNA?

• To produce only recessive traits

• To eliminate genetic variations

• To determine our physical traits and health

• To create identical genes