ST.4 Variation and Inheritance N5 (MO)

Question 1

What happens when genes from parents are combined?

Answer 1

Combining genes from two parents contributes to variation within a species

Question 2

What is discrete variation?

Answer 2

Discrete variation is the single gene inheritance of characteristics where measurements fall into distinct groups

Question 3

What is continuous variation?

Answer 3

Continuous variation is the polygenic inheritance of characteristics where there is a range of values from one extreme to the other

Question 4

What is a monohybrid cross?

Answer 4

Monohybrid cross is the model that is used to show the inheritance pattern of one characteristic

Question 5

What are the purpose of punnett squares?

Answer 5

Punnett squares can be used to predict the results of any cross where the genotypes of the parents are known

Question 6

Why are predicted phenotype ratios among offspring not always achieved?

Answer 6

Predicted phenotype ratios among offspring are not always achieved because fertilisation is random