Nat 5 Key area 2.4 Variation and inheritance

What would the genotype type Tt be termed as?

• homozygous

• heterozygous

• homozygous recessive

What would the genotype type AA be termed as?

• homozygous

• heterozygous

• homozygous recessive

What would the genotype type bb be termed as?

• homozygous

• heterozygous

• homozygous recessive

Which of the following all show discrete variation?

• body height, hair type, heart rate

• blood type, eye colour, fingerprint type

• foot length, tongue rolling ability, hand span

• body mass, eye colour, earlobes attached

What do we call two different forms of the same gene?

Complete the blank: In genetics, the word __________ is used to describe an organism's appearance.

What term describes a body characteristic that is controlled by one gene?

• polygenic

• discrete

• genotype

• phenotype

• heterozygous

What term is used to describe a genotype with two different alleles?

What term is used to describe a genotype with two of the same alleles?

State the type of variation shown by polygenic inheritance.