Studying inheritance Flashcards
What is genotype?
The genetic constitution of an organism. This describes all the alleles that an organism has. Dr
Define phenotype.
The observable or biochemical characteristics that an organism has. This is the result of interactions between a genotype and the environment
Define a gene.
A sequence of nucleotide bases that codes for a particular polypeptide
Define an allele.
Different versions of the same gene.
What are homozygous chromosomes.
When the alleles on each of the chromosomes are the same
What are heterozygous chromosomes.
When the alleles on each of the chromosomes are different
What is a dominant allele?
It only requires one copy and is always expressed
What is a recessive allele?
Requires two copies to be expressed and is not always expressed
What are multiple alleles?
When a gene has more than two allelic forms
