Principles of Inheritance and Variation Easy Questions and Answers

Principles of Inheritance and Variation

A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type offers blood donation without delay. What would have been the type of blood group of the donor friend?

Type O blood group is considered the universal donor blood group. It can potentially be transfused to any patient regardless of their blood type. In emergency situation, this type of blood can be given to the patient.

Correct Option: C

When two unrelated individuals or lines are crossed, the performance of F₁ hybrid is often superior to both parents. This phenomenon is called:

Heterosis or hybrid vigor occurs when two unrelated individuals or lines are crossed, the performance of F₁ hybrid, which is often superior to both is parents.

Correct Option: A

Heterosis or hybrid vigor occurs when two unrelated individuals or lines are crossed, the performance of F₁ hybrid, which is often superior to both is parents.

Multiple alleles are present:

All alleles of a gene are situated on the same loci of chromosome in organisms.

Correct Option: B

All alleles of a gene are situated on the same loci of chromosome in organisms.

A test cross is carried out to

A test cross, first introduced by Gregor Mendel, is used to determine if an individual exhibiting a dominant trait is homozygous or heterozygous for that trait. It takes place between F₁ - Generation and recessive parent.

Correct Option: A

A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood.What was the blood group of the donor?

Blood group O acts as universal donor.

Correct Option: C

Blood group O acts as universal donor.