Biology Past Questions and Answers

The type of variation illustrated above is

A Continuous variation
B Discontinuous variation
C Morphological variation
D Environmental variation

Question 1727:

Which of the following characters is not a morphological variation?

A Shape of the nose
B Colour of skin
C Colour of hair
D Tongue rolling

Question 1728:

An apple plant can produce sexually and asexually and it has 40 chromosomes in its leaf cells. How many chromosomes would be in each gamete and somatic cell?

A 20 chromosomes in the gametes and 10 in the somatic cells
B 40 chromosomes in the gametes and 20 in the somatic cells
C 20 chromosomes in the gametes and 40 in the somatic cells
D 40 chromosomes in the gametes and 40 in the somatic cells

Question 1729:

Assuming that A is the gene for normal skin colour and is dominant, while a is the gene for albinism and its recessive, what is the likely genotype of the couple which had 50% normal and 50% albino offspring?

A AA, aa
B Aa, aa
C AA, Aa
D Aa, Aa

Question 1730:

Which of the following statements is true about mutation?

A Phenotype is not involved
B Genotype is not involved
C Artificial induction is not possible
D Genotype is involved