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13 Cards in this Set
- Front
- Back
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X- Chromosome
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The longer chromosome. Females have two x chromosomes, males have one x chromosomes and one y chromosomes.
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Y-chromosome
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The shorter sex chromosome. Males have one x chromosome and one Y chromosomes
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Genotype
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Gene combination that determines phenotype.
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Gamete
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In organisms that reproduce sexually, one of the sex cells that unites with another to form a zygote.
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Dominant
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Stong for of agene which is expresses enen if a recessive gene is present
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Mutation
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A change in DNA or chromosomes can occur in body cells and sex cells. most mutation are not harmful.
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Meiosis
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Cell division that produces gametes or spores having one set of unpaired chromosomes.
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Genetics
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The study of inheritance
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gene
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a unit of genetic material that determines a trait.
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Hybird
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A geno type which is a combination of two different alleles for the same gene.
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recessive
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The weak form of a gene, which is not expressed when the dominant form is also present.
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Phenotype
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A trait that an organism actually shows.
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Heredity
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The passing of traits from parents to offspring.
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