Genetic terms

Question 1

A gene

Answer 1

a sequence of bases on a dna molecule which code for a polypeptide which results in a characteristic

Question 2

Alleles

Answer 2

different versions of the same gene

Question 3

locus

Answer 3

the position of the allele on a chromosome

Question 4

genotype

Answer 4

the alleles it has

Question 5

phenotype

Answer 5

the characteristics of alleles which are expressed

Question 6

homozygous and heterozygous

Answer 6

if an organism carries two copies of the same allele its homo

if it carries two different alleles its hetero

Question 7

dominant and recessive

Answer 7

dominant is when an allele appears in the phenotype even when theres only one copy

recessive is when the characterisitcs only appear in the phenotype if two copies are present

Question 8

codominant allele

Answer 8

alleles both expressed but neither is recessive

Question 9

carrier

Answer 9

carrying an allele which is not expressed but can be passed onto the off spring