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genetics

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TermDefinition
allele alternative form of gene for charateristic
dominant gene stronger than others
homozygous 2 same alleles within genotype
hetrozygous two different alleles within genotype
diploid paired set of chromosomes within somatic cell
dna code of genetic information// made of a series of chromosomes ATCG
chromosome inside nucleus- contain dna
gene coded set of instructions within dna// on chromosome
nucleus where genetic material is stored
genome total set of genes
cell division mitosis // meiosis
mitosis replacement, growth and repair
meiosis production of gametes. chromosome number halved
gametes sex cells
zygote 23 pairs of chromosomes (46)
somatic cells non sex cells
phenotype visible expression of trait// may be influenced by environent
homologous matching pair of chromosomes
non-homologous non matching pairs
autosomes non sex chromosomes 22 pairs (44)
sex chromosomes two remaining chromosomes
XX female
XY male
trisomy more chromosomes // down syndrome
monosomy only one sex chromosome
karyotype determine gender// treated and stained- match chro. in size biggest to smallest
Created by: sepiso
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