3.7.1 inheritance key terms Flashcards
1
Q
allele
A
variation of the same gene
2
Q
heterozygous
A
2 different alleles (Aa)
3
Q
homozygous
A
same allele (aa)
4
Q
dominant
A
gene is always expressed in phenotype
5
Q
recessive
A
must have both alleles for gene to be expressed
6
Q
genotype
A
combination of alleles present in an organism
7
Q
phenotype
A
observable characteristics as a result of genotype and environment
8
Q
codominant
A
2 dominant alleles both expressed in phenotype at the same time
9
Q
locus
A
fixed position of a gene on each chromosome
