Flashcards in Asexual Reproduction Deck (24):
How many chromosomes do humans have in each cell?
How many pairs of chromosomes do humans have in each cell?
What is the name for chromosomes that have gene codes for a trait but have different variations of that trait?
What are the phases a cell goes through during its life?
interphase, prophase, metaphase, anaphase, telophase
the cell cycle
sequence of growth and division in a cell
the first phase of cell division. DNA replicates itself and forms a sister chromatid for each chromosome.
a period of nuclear cell division, two daughter cells are formed ( each contains a full set of chromosomes ) , identical to parent cells (clone)
chromosomes become visible, nuclear envelope disintegrates, centrioles migrate to opposite poles, spindle fibers form between centrioles
chromosomes become attached to spindle fibers by the centromeres, chromosomes line up in the middle
the protein connecting the sister chromatids together
sister chromatids separate, spindle fibers shorten and pull one of the double chromosomes to a pole
chromatids reach opposite ends of the poles, two nuclear membranes form, chromosomes unwind and loose their shape
When does a cell carry out metabolism?
the cell pinches together and 2 cells are formed
What organelle do animals have that plants do not?
In a plant cell, the cell can not go through cytokinesis because of the cell wall. What forms across the middle of a cell?
When do our cells divide?
growth, repair, development and maintenance
also uses mitosis, new cells are identical, offspring are clones of parents, no variation unless a mutation occurs
nuclear material and cytoplasm of a cell divide equally
ex bacteria and ameba
cytoplasm divides unequally to create a smaller bud
outgrowth from the body of a parent that develops into a completely different organism, may detach or remain attached
The middle of a animal cell
Specialized cells are released by parents enclosed in protective capsules develop into new individual when environment is good (dandelion)