2015 - WAEC Biology Past Questions and Answers - page 4
31
A woman with blood group A gives birth to a child with blood groug O. Which of the following blood groups cannot belong to the father?
A
A
B
B
C
C
D
AB
correct option: c
Users' Answers & Comments32
How many chromosomes will be in a gamete if the normal cell has four chromosomes?
A
2
B
4
C
6
D
8
correct option: a
Users' Answers & Comments33
Use the diagram above to answer this question.
What of the following statements about the cross is correct?
What of the following statements about the cross is correct?
A
The gene for the spotted coat is recessive to the gen for the black coat
B
Black coat and spotted coat are co-dominant
C
The gene for the spotted coat is dominant over the gene for the black coat
D
the genotype for the F1 are homozygous dominant
correct option: c
Users' Answers & Comments34
Use the diagram above to answer this question.
What are the genotypes of the parents if the gene for skin colour is H?
What are the genotypes of the parents if the gene for skin colour is H?
A
Spotted Leopard HH Black Panther hh
B
Spotted Leopard HH Black Panther Hh
C
Spotted Leopard Hh Black Panther Hh
D
Spotted Leopard Hh Black Panther hh
correct option: a
Users' Answers & Comments35
Use the diagram above to answer this question.
What are the genotypes of the parents if the gene for skin colour is H?
What are the genotypes of the parents if the gene for skin colour is H?
A
Spotted Leopard HH Black Panther hh
B
Spotted Leopard HH Black Panther Hh
C
Spotted Leopard Hh Black Panther Hh
D
Spotted Leopard Hh Black Panther hh
correct option: a
Users' Answers & Comments36
According to Mendel's first law of inheritance, segregation of genes occur when
A
tall plants are crossbred
B
short plants are crossbred
C
tall plants and short plants are crossbred
D
plants are crossbred
correct option: c
Users' Answers & Comments37
Which of the following statements about sex-linked characters is not true?
A
They are usually borne on the X = chromosome
B
They are more common in males
C
Males are usually carriers
D
They are not usually carried on the Y chromosomes
correct option: c
Users' Answers & Comments38
In explaining the term camouflage, to a class, the diagram above show four varieties, P, Q, R, and S of the same species of fish living amongst water plants in a river were used
Which of the varieties is likely to decrease most in number if a predatory fish is introduced into the river?
Which of the varieties is likely to decrease most in number if a predatory fish is introduced into the river?
A
P
B
Q
C
R
D
S
correct option: c
Users' Answers & Comments39
In explaining the term camouflage, to a class, the diagram above show four varieties, P, Q, R, and S of the same species of fish living amongst water plants in a river were used
Which of the varieties is most likely to outlive the others?
Which of the varieties is most likely to outlive the others?
A
P
B
Q
C
R
D
S
correct option: b
Users' Answers & Comments40
The variety P,Q,R and S Outlive the others because the
A
variety is the most beautiful
B
variety does not have markings
C
markings of the variety are similar to those of the environment
D
predator does not like eating the variety
correct option: c
Users' Answers & Comments