Cell Cycle
Every cell in the body renews completely every _______________ years.
What is 7 years?
This is the first phase of mitosis where chromosomes condense and the nuclear envelope disappears
What is prophase?
How many total cells are produced in Meiosis?
What are 4 cells?
This is the name of the cell that is formed when a sperm penetrates an egg cell and their nuclei fuse.
What is fertilization?
Areas of DNA code for _________________ that determine how we look.
Traits
Give three reasons why cells need to divide.
Growth, development, repair, reproduction and regeneration
This is the name for full cell division
Cytokinesis
This is the name scientists give to the daughter cells produced in meiosis. (not sperm or egg)
what are Gametes
The name of the cell that results from fertilization
Zygote
In this phase a cell will copy its DNA.
S phase or Synthesis Phase
What is the word for a cell that has been given a specific job in the body?
What is a differentiated cell?
This phase of mitosis sees sister chromatids pulled apart to opposite ends of the cell.
What is anaphase?
Why are we not exact copies of our parents?
-Recombination of genes in meiosis
-Half mom, half dad
(Anything similar)
Scientific name for Egg Cell
INTERPHASE refers to which steps of the cell cycle?
G1, S and G2
Which phase of the cell cycle do cells spend the LEAST time in?
Mitosis
The daughter cells from mitosis are genetically _____ as compared to the parent cell.
identical
How many gametes are produced from one round of Meiosis?
4 gametes
Why is sexual reproduction beneficial for populations?
Provides genetic variation
What is the function of a chromosome?
-keep DNA organized
Why do the G1 and G2 phases exist in the cell cycle?
To grow the cell so that it is not too small when it fully divides.
Mitosis produces cells with 46 chromosomes, also known as ____________. This is done through dividing how many times? ______________
Diploid, once/ one division
Meiosis produces haploid cells with __________ chromosomes by dividing _______________ times.
23, 2 times
This process occurs just after fertilization to make new cells for the embryo to develop.
What is mitosis
A chromosome is made up of ___________________ wrapped around sister ____________________ held together by a ____________________.