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20 Cards in this Set
- Front
- Back
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Chromosome |
A tightly coiled strand of DNA. They come in pairs called homologous chromosomes |
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Trait |
Characteristics or features we inherit from parents |
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Gene |
A gene is a specific length (sequence of bases) of DNA that determines a patocular characteristic |
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Allele |
The variation of the gene containing different Base sequences |
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Mutation |
A permanent change in the Base sequence |
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Genotype |
The combination of alleles for a paticualrt trait |
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Phenotype |
Physical expression of a trait |
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Gamete |
Sex cell |
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Zygote |
Cell formed by the fusion of the sperm cell and egg cell |
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Dominant allele |
An allele with the ability to mask a recessive allele |
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Recessive allele |
An allele only expressed in the phenotype when both alleles in the genotype are recessive |
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Homozygous |
Both alleles in the genotype are the same |
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Heterozygous |
Allele present are different |
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Pure breeding |
A person that is homozygous dominant or recessive |
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Sexual reproduction |
A type of reproduction that includes two parent gametes. Offspring are unique |
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Asexual reproduction |
A type of reproduction that requires one parent |
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Variation |
The slight difference in individuals |
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DNA replication |
When an identical copy is madeb |
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Mitosis |
A type of cell division for growth and repair |
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Meiosis |
A type of cell division for creation of gametes |
