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DNA/cell mitosis

biology

QuestionAnswer
The weakest chemical bonds that joins the "rungs" (nitogenous bases) of a DNA molecule. hydrogen
nucleotides that form DNA molecules are complimentary thymine & guanine
when DNA unravels as it begins to replicate ____ would decompose the hydrogen bonds between the nitrogenous bases at point 4. DNA helicase
why does DNA replicate? replace cells lost to disease, injury and promote cell division
____ of a chromatid that forms a chromosome is DNA that would have served as a template along which "new" DNA was assembled 50%
nuclotides from which DNA is formed are complementary in the number of hydrogen bonds they form
phase of a cell's life cycle when it is producing proteins and copying its DNA interphase
type of cells (tissue) not likely to undergo cell division nervous and muscular
phase of mitosis when chromosomes become apparent & the nuclear membrane decomposes prophase
type of cells (tissue) that divide most rapidly epithelial (skin)
part of a cell's life history when the cell splits into two cells cytokinesis
pase of mitosis characterized by new nuclei beginning to form around sets of chromosomes telophase
form of asexual reproduction exhibited by unicelluar organisms binary fission
cell organelles with the property of contractility that move chromosomes to opposite pole during mitosis kinetochore fibers
one-half of a chromosome comprised of 50% "old" and 50% "new" DNA chromatid
"sticky" protein that holds a chromosome together just prior to cell division centromere
homologus chromosomes may not necessarily be the same in the way they influence traits
what are examples of diploid cells (2n) liver, pancreas & muscle
laboratory procedure that allows DNA (chromosomes) to be acquired and photographed in order to assess correct chromosome numbers karyotyping
form of protein that serves as an "organizer" around which DNA wraps itself in order to shorten histone
forms of gametes sperm & egg cells
more or less invisible physical form of DNA that cannot be photographed chromatin
Created by: thedani365
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