Inherited change Flashcards
1
Q
what is a genotype?
A
the genetic constitution of an organism that describes all the alleles that an organism has
2
Q
what is a phenotype?
A
the observable or biochemical characteristics of an organism
3
Q
what is a gene?
A
a length of DNA that normally codes for a particular polypeptide
4
Q
what is an allele?
A
one of the different forms of a gene
5
Q
what is a dominant allele?
A
an allele that is always expressed in the phenotype
6
Q
what does codominant mean?
A
two allele both contribute to the phenotype
7
Q
what does sex-linkage mean?
A
a gene that is carried on either the X or Y chromosome
8
Q
what is autosomal linkage?
A
Where two or more genes are carried on the same autosome
9
Q
what is epistasis?
A
allele of one gene affects of masks the expression of another in the genotype
