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12 terms

7th grade Genetics/Heredity

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Genotype
An organism's genetic makeup
Phenotype
Owtward physical appearance and behavior of an organism
Punnett Square
A tool used to predict the probability of certain traits in offsring that shows the different ways alleles can combine
Dominate
Describes a trait that covers over, or dominates another form of that trait
Trait
Charateristis that get passed down
Heredity
The passing of traits from one parent to offspring
Genetics
The study of how traits are inherited through the actions of alleles
Homozygous
Describes an organism with two alleles that are the SAME for a trait
Heterozygous
Describes and organism with two alleles for A trait
Sex-linked Gene
An allele inherited ona sex chromosome and that can cause human genetic disorders such as colorblindness and hemophilia
Incomplete Dominance
Production of a phenotype thats intermediate between the two homozygous parent
Polygenic Inheritance
Occurs when a group of gene pairs acts together and produces a specific trait, such as human eye color, skin color, or height