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genetics medley
genetics vocab
14
Biology
9th Grade
01/09/2013

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Term
gene
Definition
a section of DNA that codes for a specific trait
Term
homozygous
Definition
having the same alleles
Term
allele,
Definition
a possible form of a gene
Term
meiosis,
Definition
type of cell division resulting in 4 haploid daughter cells
Term
zygote,
Definition
the combination of 2 gametes, fertilized egg
Term
gamete,
Definition
haploid sex cell, sperm, egg, pollen
Term
diploid,
Definition
having both homologous chromosomes
Term
haploid,
Definition
having one of each homologous pair
Term
crossing over
Definition
the exchanging of DNA between homologous chromosomes
Term
dominant,
Definition
traits that only require one allele to be expressed
Term
recessive,
Definition
traits that require two alleles to be expressed
Term
genotype,
Definition
the combinations of alleles
Term
phenotype,
Definition
how the alleles express themselves
Term
heterozygous
Definition
having different alleles
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