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19 Cards in this Set
- Front
- Back
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trait |
A specific Characteristic
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Allele |
Alternate form of the same gene for a trait
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homozygous |
Having 2 identical alleles
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heterozygous |
Having 2 different alleles
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phenotype |
An organism’s physical characteristics
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genotype |
The genetic makeup of an organism
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hybrid |
Having 2 different alleles
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pure |
Having 2 identical alleles
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dominant |
A trait that when present,always shows itself
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recessive |
The trait that when in the presence of a dominant that is masked
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Law of segregation
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During the formation of gametes (egg & sperm), the two alleles responsible for a trait are separated.~During fertilization, alleles for a trait are recombined producing the genotype of the offspring
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Heredity |
Passed from parents to offspring
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Gene |
A piece of hereditary information on a chromosome.
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Karyotype |
An ordered picture of a person’s chromosome
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Sex chromosomes |
The two (sometimes unmatched) chromosomes that determine the gender of an individual
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Autosomes |
All the chromosomes except the sex chromosomes
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Mutation |
A sudden change in the structure or amount of genetic material (DNA) that an organism carries.
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Amniocentesis
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A sample of the amniotic fluid of a pregnant woman is taken & analyzed for the fetus’ chromosome content.
Any chromosomal abnormalities can be detected & the gender can be determined. |
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Mutagenic agents
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Environmental factors
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