Why Does a Person with Normal Chromosomes Only Have Two

question 15

Multiple Choice

Why does a person with normal chromosomes only have two alleles for any single gene trait?

• A)A minimum of two alleles is required for the expression of monogenic traits.
• B)When a dominant allele is paired with a recessive allele, only the dominant allele is expressed, and the recessive allele is silent.
• C)One allele for the monogenic trait is on the paternally derived chromosome, and the other allele is on the maternally derived chromosome.
• D)Expression of more than two alleles of any single-gene trait results in enhanced expression of recessive alleles and suppressed expression of dominant alleles.

---

Definitions:

Ethical Committee

A group responsible for ensuring that research and practices adhere to established ethical standards, often found in medical and academic institutions.

Extraordinary Resuscitation

Advanced and often aggressive medical interventions used in attempts to restore life in patients with critical illnesses or injuries.

Medical Record

Patient's chart; a legal document.

Mother's Permission

Consent given by a mother for someone to perform or carry out a specific task or action regarding her or her child.