Jamb Biology Questions - HEREDITY AND VARIATIONS
Question 1:
At fertilization
- A One gene from the male combines with another from the female
- B One cell from the male fuses with another from the female
- C One set of chromosome combines with another set from the female
- D One chromosome from the male joins another from the female
- E The male nucleus fuses with the female nucleus
Question 2:
In a breeding program a cross was made between two true breeding cow-pea types: one with round seeds and the other with wrinkled seed. If roundness is dominant why wrinkleness is recessive, in the first filial generation all the seeds produced will be
- A 50% wrinkled, 50% round
- B 75% wrinkled, 25% round
- C 100% round
- D 100% wrinkled
- E 25% wrinkled, 75% round
Question 3:
A secchi disc is used in the determination of
- A Tides
- B Current velocity
- C Turbidity
- D Rainfall
- E Waves
Question 4:
At fertilization
- A One chromosome from the male joins another from the female
- B One gene from the male combines with another from the female
- C The male nucleus fuses with the female nucleus
- D One set of chromosome combines with another set from the female
- E One cell from the male fuses with another from the female
Question 5:
In a breeding program a cross was made between two true breeding cow-pea types: one with round seeds and the other with wrinkled seed. If roundness is dominant why wrinkleness is recessive, in the first filial generation all the seeds produced will be
- A 25% wrinkled, 75% round
- B 100% wrinkled
- C 50% wrinkled, 50% round
- D 75% wrinkled, 25% round
- E 100% round