B6

Question 1

Gamete

Answer 1

Sex cells formed by meiosis and having half the original number of chromosomes.

Question 2

Chromosome

Answer 2

Long coiled up molecule of DNA.

Question 3

Gene

Answer 3

A section of DNA that codes for a protein/characteristic.

Question 4

Allele

Answer 4

A different version of a gene.

Question 5

Dominant

Answer 5

This is the allele that is expressed.

Question 6

Recessive

Answer 6

This is the allele that isn’t expressed unless no dominant allele is present.

Question 7

Homozygous

Answer 7

An individual with two identical alleles for a characteristic e.g. BB or bb.

Question 8

Heterozygous

Answer 8

An individual with different alleles for a characteristic e.g. Bb.

Question 9

Genotype

Answer 9

This describes the alleles present or genetic make up of an individual regarding a particular characteristic e.g. Bb or bb

Question 10

Phenotype

Answer 10

This describes the physical appearance of an individual regarding a particular characteristic e.g. black fur or brown fur for a mouse.