WAEC Past Questions and Answers - Page 3849

19,241.

The equilibrium position of a firm is attained

A.

When MC = AR

B.

When MC = PC

C.

When MC = MR

D.

When AC = AR

E.

When AR = MR

Correct answer is C

No explanation has been provided for this answer.

19,242.

Which of the following statements is correct about the structure of a chromosome? A chromosome consists of

A.

two chromatids joined at the centromere

B.

Two chromatids joined at the spindle

C.

Two chromatin threads joined at the centrioles

D.

thread-like structures not joined together

Correct answer is A

No explanation has been provided for this answer.

19,243.

In a family of eight (8), all the children are girls. Which of the following reasons correctly explains this?

A.

The woman cannot produce male children

B.

The man has a low sperm count

C.

The Y component of the man’s sex chromosome was always involved

D.

The X component of the man’s sex chromosome was always involved

Correct answer is D

No explanation has been provided for this answer.

19,244.

In artificial selection, individuals without desirable traits may be prevented from mating by

A.

outbreeding

B.

sterilization

C.

inbreeding

D.

genetic engineering

Correct answer is B

No explanation has been provided for this answer.

19,245.

The price of a commodity is determined by the

A.

Supplier

B.

Consumer

C.

Quantity of goods demanded

D.

Quantity of goods supplied

E.

Interaction of demand and supply

Correct answer is E

No explanation has been provided for this answer.