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dna and chromosomes-preap biology 1
Question | Answer |
---|---|
bacteriophage | a type of virus. |
nucleotide | monomers that make up DNA |
double helix | where two strands coil around each other like a twisted latter. |
base pairing rules | T = A and G = C |
replication | the process of which DNA is copied during the cell cycle |
DNA polymerases | a group of enzymes that bond nucleotides together |
cell cycle | the regular pattern of growth |
mitosis | the division of the cell nucleus and its contents |
cytokinesis | the process that divides the cells cytoplasm |
chromosome | the long continuous thread of DNA that consist of genes |
histone | a group of proteins |
chromatin | spaghetti like DNA |
chromatid | the duplicated chromosome |
centromere | the pinched looking chromosomes |
somatic cell | body cells |
gamete | sex cells |
homologous chromosome | the cells inherited by your parents |
autosome | 1-22 |
sex chromosome | 23 |
sexual reproduction | the fusion of two gametes |
fertilization | when the sperm and egg make one nucleus |
diploid | two copies of each chromosome |
haploid | one copies itself |
meiosis | divides, then divides again |
gametogenesis | |
sperm | |
egg | |
polar body |