Meiosis Test Flashcards
A cell with two of each kind of chromosome is called
diploid cell
A cell with one of each kind of chromosome is called
haploid cell
sperm or egg cell (another name for)
gamete
have genes for the same traits in the same order on both chromosomes
homologous chromosomes
parent cells make gametes in a process called
meiosis
are the resulting cells of meiosis genetically same or different
different
when nonsister chromatids exchange genes it is called
crossing over
all cells other than sperm or egg cells are called
somatic cells
mitosis results in ________ cells, meiosis results in ________ cells
2 diploid, 4 haploid
what is the diploid number of chromosomes in humans
2n=46
what is the haploid number of chromosomes in humans
n=23
would egg or sperm cells be considered haploid or diploid
haploid
would somatic cells (skin, hair, muscle cells, etc.) be considered haploid or diploid
diploid
when does the process of crossing over occur
prophase I
how many daughter cells are created at the end of meiosis I
2
how many daughter cells are created at the end of meiosis II - are these cells considered haploid or diploid
4, haploid
in humans, how many chromosomes are present in each cell at the end of meiosis I
46
in humans, how many chromosomes are present in each cell at the end of meiosis II
23
Gamete chromosome number is represented as
n
the cell has a diploid number of 18 what is the haploid number
9
how many alleles does each gamete have for each gene
1
when are the tetrads formed
prophase I
a tetrad consists of a __________ pair of chromosomes
homologous
there are ___ sets of chromosomes in a diploid cell
2
what type of cells undergo meiosis
sex cells
MITOSIS OR MEIOSIS - no pairing of homologous occurs
Mitosis
MITOSIS OR MEIOSIS - two divisions
Meiosis
MITOSIS OR MEIOSIS - four daughter cells produced
Meiosis
MITOSIS OR MEIOSIS - associated with growth and asexual reproduction
Mitosis
MITOSIS OR MEIOSIS - associated with sexual reproduction
Meiosis
MITOSIS OR MEIOSIS - one division
Mitosis
MITOSIS OR MEIOSIS - two daughter cells produced
Mitosis
MITOSIS OR MEIOSIS - involves duplication of chromosomes
Mitosis
MITOSIS OR MEIOSIS - chromosome number is maintained
Mitosis
MITOSIS OR MEIOSIS - chromosome number is halved
Meiosis
MITOSIS OR MEIOSIS - crossing over between homologous chromosome may occur
Meiosis
MITOSIS OR MEIOSIS - daughter cells are identical to parent cell
Mitosis
MITOSIS OR MEIOSIS - daughter cells are not identical to parent cell
Meiosis
MITOSIS OR MEIOSIS - produces gametes
Meiosis
MITOSIS OR MEIOSIS - a synapsis occurs in prophase
Meiosis
What happens to the number of chromosomes per cell during meiosis (in a human)
The number of chromosomes is halved (46 goes to 23)
Explain where the ¨sets¨ of chromosomes come from in a diploid cell.
One set is inherited from each parent.
Define homologous chromosomes
same or similar chromosomes