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15 Cards in this Set

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When the distance between two genes is short, we say there is close ________ between them.
linkage
- closely linked genes nearly always end up in the same gamete.
A diagram called a _________ can help answer questions about a person's chromosome.
karyotype
Every normal egg that is produced by a female has an _________.
X chromosome.
Half the sperm cells produced by a male carry an X chromosome and half carry a ___________.
Y chromosome
A person who is heterozygous for a recessive trait can be designated as a _______.
Carrier
A _____ ________ is simply deviation from the average, such as having six toes on each foot.
genetic abnormality
A _______ ________ causes mild to severe medical problems.
genetic disorder
A ________ is a set of symptoms that usually occur together and characterize a disorder.
syndrome
Locus
The position of a gene on a chromosome or other chromosome markers.
Hybrid offspring
an individual from any cross involving parents of differing genotypes.
Mutation
Anything that causes the sequence of linked genes to be rearranged or lost is a chromosome mutation.
Genes on the same chromosome are said to be _______.
Linked or tied
Nondisjunction
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).
Duplication
The repetition of a sequence of chromomeres or other chromosome segment, usually in linear juxtaposition to the original.
Translocation
Transfer of a segment of a chromosome to a non homologous chromosome. Translocations are usually reciprocal.