Flashcards
Meiosis
Which of the following cells undergo meiosis?
liver cells
sperm cells
brain cells
unicellular organisms
Meiosis results in
2 haploid daughter cells
4 diploid daughter cells
4 haploid daughter cells
2 diploid daughter cells
Crossing-over occurs during:
metaphase 1
prophase 1
prophase 2
anaphase 1
Meiosis is a type of cell division that produces:
gametes
.... is cell division in which the diploid number is reduced by one half (haploid) for the formation of gametes.
What is one difference in mitosis and meiosis during anaphase I?
centromeres do not exist in anaphase I.
crossing-over occurs only in anaphase of mitosis
chromatids do not separate at the centromere in anaphase I.
the chromosomes line up at the equator in anaphase I.
chromatids do not separate at the centromere in anaphase I.
Genetic diversity is the raw material for .....
Which of the following does not provide new genetic combinations?
cytokinesis
independent assortment
random fertilization
crossing -over
Of the following, which is not a type of sexual life cycle?
diploid
haploid
alternation of generations
cellular
The process in which sperm and egg cells join is called?
taxonomy
meiosis
fertilization
mitosis
Single set of unpaired chromosomes (n)
haploid
diploid
What is another name for an ovum?
egg
What divides unequally during cytokinesis for the female?
mitochondrium
sperm cell
ovary
cytoplasm
What is the number of chromosomes in gamete cells (n) of humans?
22
23
21
24
Number of divisions in meiosis
two
Number of divisions in mitosis
one
What is purpose of Meiosis?
To make gamete cells (haploid) for sexual reproduction
To make somatic cells to repair or replace cells or form growth
To make gamete cells (haploid) for sexual reproduction
XX
XY
When does crossing over occur?
at the centromere
during fertilization
during prophase 2
during prophase 1
Which of the following are true regarding the process of meiosis I?
Chromosome number is reduced from diploid to haploid.
Sister chromatids in a cell undergoing meiosis are always identical.
Most homologue pairs do not have any crossovers during prophase I.
Sister chromatids separate to opposite ends of the cell.
Chromosome number is reduced from diploid to haploid.
The process of the chromosomes overlapping and switching genetic information is known as?
crossing over
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