Inheritance key terms Flashcards
1
Q
diploid
A
an organism which has a pair of homologous chromosomes, it has 2 alleles of each gene
2
Q
gene
A
a sequence of DNA which codes for a protein
3
Q
Allele
A
different variation of the same gene
4
Q
Genotype
A
the combination of alleles that an organism has
5
Q
Phenotype
A
how the genotype is expressed (how it looks i.e brown hair)
6
Q
Dominant allele
A
an allele that is always expressed in the phenotype
7
Q
recessive allele
A
an allele that is only expressed when it is homozygous
8
Q
co-dominant alleles
A
both alleles are expressed in the phenotype
9
Q
homozygous
A
when both alleles are the same
10
Q
heterozygous
A
when alleles are different
11
Q
locus
A
location of a gene on a chromosome –> alleles of a gene always have the same locus
