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40 Cards in this Set

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Interphase
Segment of cell cycle where cell is not dividing
haploid
containing half genetic information
cleavage furrow
Area of cell membrane that pinches in
nonhistone
Protein involved in movement of DNA
g0 Phase
Phase of cell cycle seen in adult central nervous cells
Polar fibers
Extend across cell from centrosome to centrosome
Histone
Allows tight packaging of DNA
Karyotype
Used to examine a person's chromosomes
gamete
Human reproductive cell
Genetics
Study of heredity
S Phase
Phase marked by DNA Replication
G 1 phase
growth phase of cell
Cell plate
Formed in plant cells during division at point of division
Oogenesis
Creation of eggs by females
diploid
Containing both sets of genetic information
cell cycle
Description of cell's life
Biology
Study of life
Double helix
shape of DNA molecule
sex chromosome
determines sex of offspring
G 2 Phase
Phase marked by ending of DNA replication
Autosomes
Chromosomes that does not determine sex
Synapsis
Marked by homologous chromosomes lined up side by side
mitosis
Simple Cell division; the division of the nucleus which occurs during cell division
Prophase
Phase of mitosis where cell prepares to divide by moving chromosomes to middle
spermatogenisis
Creation of sperm by males
telophase
Phase marked by cells splitting in two
spindle fibers
source of genetic variation by exchanging info. between side by side chromosomes
binary fission
Bacteria division; division of prokaryotic cells into two identical haploid cells
metaphase
Phase of mitosis where chromosomes are aligned
centromere
Area between chromosomes holding them together
cytokenisis
Division of the cytoplasm; during telophase
anaphase
Phase of mitosis where chromosomes begin to seperate
Tetrad
Name given to chrosomes lined up side by side during meiosis
Centriole
animals cells each centrosomes contain a pair of small, cylinder-like bodies;
plant cells lack these
centrosomes
appear as two pairs of dark spots next to the disappearing nucleus.
In plants and animals_______move towards opposite ends of the cell
Kinetochore
found in the centromere section of each chromatid
asexual reproduction
production of offspring from one parent.
Independent assortment
the random separation of the homologous chromosomes.
crossing over
Process by which portions of chromatids may break off and attach to adjacent chromatids on the homologous chromosomes.
polar bodies
one of two small cells produced and discarded during each of the two meiotic devisions that yield the haploid egg.