Question 1:
How can variation increase the survival of species?
Answer:
An organism in a population that has variation possesses characteristic which is adaptable to the environment compared to other organisms within the same population which do not have the variation.
How can variation increase the survival of species?
Answer:
An organism in a population that has variation possesses characteristic which is adaptable to the environment compared to other organisms within the same population which do not have the variation.
Question 2:
Determine the following variations:
(a) Intelligence
(b) Presence of dimples
(c) Type of hair
(d) Height
(e) Type of earlobes
Answer:
Determine the following variations:
(a) Intelligence
(b) Presence of dimples
(c) Type of hair
(d) Height
(e) Type of earlobes
Answer:
Question 3:
State two causes of variation.
Answer:
Genetic factor and environmental factor
State two causes of variation.
Answer:
Genetic factor and environmental factor
Question 4:
Variation occurs because of sexual reproduction
Explain the above statement.
Answer:
Sexual reproduction involves fertilisation between male gamete and female gamete.
During formation of gamete, cross-linking occurs between homologous chromosomes.
Fertilisation between two types of gametes occurs randomly which causes variation in the offspring produced.
Variation occurs because of sexual reproduction
Explain the above statement.
Answer:
Sexual reproduction involves fertilisation between male gamete and female gamete.
During formation of gamete, cross-linking occurs between homologous chromosomes.
Fertilisation between two types of gametes occurs randomly which causes variation in the offspring produced.