The wings of bats and birds, the flippers of whale and the fins of fish are examples of
adaptive radiation
vestigial organs
continuous variation
convergent evolution
divergent evolution
Correct answer is E
No explanation has been provided for this answer.
developing superior varieties of plants only
developing superior varieties of animals only
developing disease-resistant varieties only
encouraging random reproduction in agriculture
applying the principles of heredity in agriculture
Correct answer is E
No explanation has been provided for this answer.
Which of the following statements is not true about chromosomes?
Each chromosome is made up of two chromatids
Body cells have diploid numbers of chromosomes
Homologous chromosomes do not occur in pairs naturally
The sex cells have haploid number of chromosomes
Chromosomes have many transverse bands
Correct answer is C
No explanation has been provided for this answer.
dominant to red
recessive to red
homozygous to red
heterozygous to red
linked to red
Correct answer is B
No explanation has been provided for this answer.
Which of these is not a hereditary variation?
Infant paralysis
Blood group
Sickle cell
Nose and face shape
Hair colour
Correct answer is A
No explanation has been provided for this answer.