Variation and Inheritance

Question 1

Discrete variation

Answer 1

Differences in characteristics controlled by one single gene (single gene inheritance)

Question 2

Examples of discrete variation

Answer 2

-ear lobe shape
-long and short hair in cats
-fingerprints

Question 3

Continuous variation

Answer 3

Differences in characteristics controlled by more than one gene (also known as polygenicc inheritance)

Question 4

Examples of continuous variation

Answer 4

-height
-broad bean length
-measurements of a range of values

Question 5

Allele

Answer 5

Different forms of a gene that produce different phenotypes

Question 6

Phenotype

Answer 6

Physical appearance of an organism for example a blue eyed male

Question 7

Genotype

Answer 7

Genetic makeup of an organism example- BB, Bb, bb