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CHROMOSOME (Ch 2B) - Coggle Diagram
CHROMOSOME
(Ch 2B)
CHROMOSOME STRUCTURE
& FUNCTIONS
CHROMATIN
thread-like, tangled
has DNA & RNA
has proteins (histones & nonhistones)
histone = protein that provides structural support to a chromosome
long fibers
make up chromosome
CHROMATID
longitudinal subunit
replicated chromosome
has sister chromatid
CHROMOSOME
rod-shaped
inside cell nucleus
carries DNA
hereditary mat.
influence devt & characteristics
contains genetic info
found in chromatin
vector of heredity
PARTS
CENTROMERE
point where chromatids are joined
where the kinetochore proteins would attach
kinetochore is the protein
where spindle fibers attach
it is a location
where chromatids are joined
region of chromosome
TELOMERE
end of chromosome
protect ends from destruction
repetitive DNA
P ARM
short arm of chromosome
Q ARM
long arm of chromosome
CLASSIFICATION
METACENTIC
centromere is in the middle
p & q arms are equal lengths
V-shaped during anaphase
SUBMETACENTRIC
centromere is near the middle of chromosome
L-shaped during anaphase
ACROCENTRIC
centromere is towards the end of chromosome
J-shaped during
anaphase
TELOCENTRIC
centromere is at end of chromosome
1 long, rod-like chromosome
rod-shaped during anaphase
GENES
section of chromosome
contain info
specific cell function
CELL CYCLE
series of events
cell
replication
CELL GROWTH CYCLE
INTERPHASE
GAP 1 (G1)
SYNTHESIS (S)
GAP 2 (G2)
MITOTIC PHASE (M PHASE)