The moment that the nucleus of a sperm cell fuses with the nucleus of an egg cell is called...
What is fertilization?
100
Mitosis makes ___ identical cells and Meiosis makes ___ non-identical cells.
What are 2 and 4
200
This is the phase of mitosis when the chromosomes line up down the middle.
What is Metaphase?
200
This is the part of Meiosis where crossing over occurs.
What is Prophase I?
200
This is when the DNA is replicated.
What is the S phase?
200
The first body cell that is created in fertilization is called...
What is a zygote
200
Mitosis creates more _______ where Meiosis creates ____________.
What are somatic cells and gametes.
300
This is the phase of Mitosis where the sister chromatids are pulled apart.
What is Anaphase?
300
This is the part of Meiosis where the homologous chromosomes are pulled apart.
What is Anaphase I?
300
This is when the cytoplasm and other cell parts are growing in preparation for mitosis/meiosis.
What is G2 phase?
300
When a zygote does mitosis and divides it becomes a mass of cells called...
What is an embryo
300
Mitosis has ___ division(s) and Meiosis has ___ division(s).
What are 1 and 2
400
This is the phase of Mitosis where the nuclear membrane reforms and a cleavage furrow appears.
What is telophase?
400
This is the part of Meiosis when chromosomes line up down the middle.
What is Meiosis II?
400
When the cytoplasm splits and two daughter cells are formed it is called...
What is cytokinesis?
400
If an organism's sperm cell has 20 chromosomes, how many chromosomes would be present in that organisms body cell?
What is 40 chromosomes
400
The cells made in mitosis have ____________ number of chromosomes and the cells in meiosis have ______________ number of chromosomes.
What are the same and half the?
500
In prophase, the ______________ begins to disappear and spindle fibers are formed.
What is nuclear envelope?
500
At the end of Meiosis I, this is how many chromosomes are in each cell.
What is half the number of chromosomes?
500
These 3 things make up "Interphase" where the cell spends most of its life
What are G1, S, G2?
500
In meiosis, there are two things that occur to promote genetic diversity. One of these is random assortment of chromosomes. _________________ is another thing that promotes genetic diversity.
What is crossing over?
500
Mitosis and Meiosis both go through this phase before cell division.