Jamb Biology 2010 Past Questions and Answers

Question 36:

• JAMB 2010

Thyroxine and adrenalin are examples of hormones which control

A. Blood grouping
B. Tongue rolling
C. Behavioural patterns
D. Colour variation

Question 37:

• JAMB 2010

A pair of genes that control a trait is referred to as

A. An allele
B. Recessive
C. Dominant
D. A hybird

Question 38:

• JAMB 2010

The chromosome number of a cell before and after the process of meiosis is conventionally represented as

A. 2n → 2n
B. N → n
C. N → 2n
D. 2n → n

Question 39:

• JAMB 2010

At what stage in the life history of a mammal is the sex of an individual set?

A. At adolescence
B. At puberty
C. At birth
D. At conception

Question 40:

• JAMB 2010

The main distinguishing features between the soldier termite and other members of the caste are the

A. Presence of wings, possession of a small head and large thorax
B. Presence of wings, possession of a large thorax and a small head
C. Absence of wings, possession of strong mandibles and a large head
D. Absence of wings,possession of big head and the absence of mandible