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Genetics Vocabulary
vocabulary for Genetics unit
16
Biology
10th Grade
05/11/2011

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Term
Alleles
Definition
Alternative forms of a gene, like tall and short in Mendel's pea plants.
Term
Asexual Reproduction
Definition
Process by which a single parent reproduces by itself.
Term
Characteristic
Definition
A distinguishing trait, feature, or quality.
Term
Clones
Definition
Organisms that come from the same cell and are genetically identical to each other.
Term
Dihybrid Cross
Definition
All the possible genetic combinations when two genes are considered together.
Term
Dominant
Definition
An allele that can mask the recessive allele.
Term
Genetics
Definition
This is the science of genes, heredity and variation of organisms.
Term
Genotype
Definition
The specific combination of alleles an individual has, eg. TT or Tt
Term
Heterozygous
Definition
Having two different alleles for the same genetic trait, eg. Tt
Term
Homologous chromosome
Definition
One of a pair of chromosomes that each codes for the same genetic information
Term
Homozygous
Definition
Having two identical alleles for the same genetic trait, eg. TT or tt
Term
Monohybrid Cross
Definition
All the possible genetic combinations of a single pair of alleles.
Term
Phenotype
Definition
The physical expression of genes, eg. tall or short
Term
Punnett Square
Definition
The grid diagram that shows the gene combinations that might result from a genetic cross.
Term
Recessive
Definition
An allele that can be masked by a dominant one.
Term
Trait
Definition
A specific, observable, characteristic that varies from one individual to another.
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