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15 Cards in this Set
- Front
- Back
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When the distance between two genes is short, we say there is close ________ between them.
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linkage
- closely linked genes nearly always end up in the same gamete. |
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A diagram called a _________ can help answer questions about a person's chromosome.
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karyotype
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Every normal egg that is produced by a female has an _________.
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X chromosome.
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Half the sperm cells produced by a male carry an X chromosome and half carry a ___________.
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Y chromosome
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A person who is heterozygous for a recessive trait can be designated as a _______.
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Carrier
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A _____ ________ is simply deviation from the average, such as having six toes on each foot.
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genetic abnormality
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A _______ ________ causes mild to severe medical problems.
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genetic disorder
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A ________ is a set of symptoms that usually occur together and characterize a disorder.
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syndrome
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Locus
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The position of a gene on a chromosome or other chromosome markers.
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Hybrid offspring
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an individual from any cross involving parents of differing genotypes.
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Mutation
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Anything that causes the sequence of linked genes to be rearranged or lost is a chromosome mutation.
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Genes on the same chromosome are said to be _______.
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Linked or tied
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Nondisjunction
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Chromosome pairs do not disjoin (separate) during cell division so that both chromosomes go to one daughter cell and none to the other. Nondisjunction causes errors in chromosome number (trisomy).
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Duplication
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The repetition of a sequence of chromomeres or other chromosome segment, usually in linear juxtaposition to the original.
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Translocation
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Transfer of a segment of a chromosome to a non homologous chromosome. Translocations are usually reciprocal.
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