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Chapter 5 - Section 1 - Genetics
7th grade
12
Science
7th Grade
02/14/2012

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Term
Meiosis
Definition
The reproductive process that produces four haploid sex cells from one diploid cell and ensures offspring will have the same number of chromosomes as the parent organisms.
Term
Heredity
Definition
The passing of traits from parents to offspring.
Term
Allele
Definition
An alternative form that a gene may have for a single trait; can be dominant or recessive
Term
Genetics
Definition
The study of how traits are inherited through the actions of alleles.
Term
Hybrid
Definition
An offspring that was given different genetic information for a trait from each parent
Term
Dominant
Definition
Describes a trait that covers over or dominates another form of that trait
Term
Recessive
Definition
Describes a trait that is covered over or dominated by another form of that trait and seems to disappear
Term
Punnett Square
Definition
A tool to predict the probability of certain traits in offspring that shows the different ways alleles can combine
Term
Genotype
Definition
The genetic makeup of an organism
Term
Phenotype
Definition
Outward physical appearance and behavior of an organism as a result in its genotype
Term
Homozygous
Definition
Describes an organism with two alleles that are the same for a trait
Term
Heterozygous
Definition
Describes an organism with two different alleles for a trait
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