Module 8 Vocabulary Flashcards
True Breeding
If an organism has a certain characteristic that is always passed onto it’s offspring, we say that this organism is bred true
Allele
One pair of genes that occupies the same position on homologous chromosomes
Genotype
Two-letter set that represents the alleles an organism possesses for a certain trait
Phenotype
The observable expression of an organisms genes
Homozygous Genotype
A genotype in which both alleles are identical
Dominant Allele
An allele that will determine that will determine phenotype if just one is present in the genotype
Recessive Allele
An allele that will not determine the phenotype unless the genotype is homozygous in that allele
Pedigree
A diagram that follows a particular phenotype through several generations
Monohybrid Cross
A cross between two individuals, concentrating on two definable traits
Dihybrid Cross
A cross between two individuals, concentrating on two definable traits
Autosomes
Chromosomes that do not determine the sex of an individual
Sex Chromosomes
Chromosomes that determine the sex of an individual
Antigen
A protein that, when introduced in the blood, triggers the production of an antibody
Autosomal Inheritance
Inheritance of a genetic trait not on a sex chromosome
Genetic Disease Carrier
A person who is heterozygous in a recessive genetic disorder
