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11 Cards in this Set

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allele
1 of 2 or more diff. molecular forms of a gene that codes for diff. versions of the same trait
Chromosome
1 molecule of DNA and associated proteins that carry genetic codes
Chromatid
1 of 2 DNA molecules and associated proteins

formed after replication, but before mitotic or meiotic division
Diploid
chromosome number of somatic cells. It is 2 chromosomes of each type, a pair of homologous genes.
DNA
deoxyribonucleic acid is a nucleic acid that is double stranded.

It carries the genetic coding for all our traits
Gene
unit of information about an inheritable trait that is passed on from parent to offspring
Haploid
chromosome number of a gamete (sex cell after meiosis) that has only one of a pair of each set of chromosomes
Heterozygous
having non-identical alleles at a particular locus on a pair of homologous chromosomes
homologous pair
a pair of chromosomes that carry genes for the same kind of trait. This pair lines up during meiosis I.
Homozygous
having 2 identical alleles at a given locus on a pair of homologous chromosomes
Locus
specific location of a particular gene on a chromosome