Chromosomes, Etc.
What is the name that we give to the DNA content of the cell?
Genome
What are the steps in the order they would occur during mitosis?
Prophase, Metaphase, Anaphase Telophase
True or False: Meiosis is the specialized type of cell division that produces gamete cells for sexual reproduction.
True
Which is true regarding both mitosis and meiosis?
A. Both occur in only animal cells
B. All organisms go through both mitosis and meiosis
C. They are both involved in cell division
D. None of the above
C. They are both involved in cell division
Examples of gametes are:
sperm & egg cells
If the diploid chromosome count in humans is 46, how many pairs of homologous chromosomes are there?
23
Which phase of mitosis does: the chromosomes line up across the middle of the cell?
Metaphase
Crossing over occurs during which phase of meiosis?
Metaphase I
What are the two resulting cells formed from a single cell called?
Daughter Cells
What completes the cell division? (dividing the cytoplasm into two)
Cytokinesis
A rabbit is a diploid organism. Its egg cell has 22 chromosomes. How many chromosomes can be found in a rabbit’s neuron cell?
44
Which phase of mitosis does: the chromosomes pull apart and separate to become individual chromosomes?
Anaphase
What is known as the reductional division of meiosis?
Meiosis I
What kind of cells divide with mitosis? & What kind of cells divide with meiosis?
Mitosis - body cells
Meiosis - Gametes (Sperm & Egg cells)
The protein fibers that extend from centrioles and attach to chromosomes to pull them apart are called:
Spindle fibers
What type of genetic information must be copied for the next generation of cells?
DNA
If the cell of a diploid organism (2n=4) undergoes mitosis, how many chromosomes are present in each daughter cell?
4
If the cell of a diploid organism (2n=6) undergoes meiosis, how many chromosomes are present in each daughter cell at the end of meiosis II?
3
What happens during interphase? (2 things)
Cell Growth and DNA duplication
What is cancer?
Your own cells that have mutated and begin rapidly growing and dividing out of control
The DNA is organized into discrete structures that are known as:
Chromosomes
Why is mitosis important? (2 things)
Growth and repair
What is the exchange of genes between homologous chromosomes called?
Crossing over
What are the two main stages of the cell cycle?
Interphase & Cell Division
Explain the five ways in which mitosis and meiosis are different. (How many cells do they form, are the daughter cells the same as or different than the parent cell, are the daughter cells diploid or haploid, how many times does PMAT happen, does crossing over happen during prophase)
Mitosis: 2 daughter cells, Genetically identical, Diploid,1 division, No Crossing-over
Meiosis: 4 daughter cells, Genetically Distinct, Haploid, 2 division, Yes Crossing-over