WorksheetsMeiosis Review
Total questions: 16
Worksheet time: 8mins
How many chromosomes are in a human somatic cell?
46
23
22
45
How many chromosomes are in a human gametic cell?
23
46
45
22
What is the outcome of crossing over?
increased genetic variation
decreased genetic variation
increased number of gametes
splitting of homologous chromosomes
When does crossing over occur?
prophase I of meiosis I
prophase II of meiosis II
metaphase I of meiosis I
s phase
What kind of cells do meiosis?
reproductive cells
all tissues
all tissues except brain and spinal cord
somatic cells
Which of the following statements about fertilization is correct?
sperm fertilizes egg
egg fertilizes sperm
egg fertilizes egg
sperm fertilizes sperm
How does the number of chromosomes in a zygote compare to the gametes?
it is doubled
it is halved
it is equal
it depends
Law of segregation
each of an organism's two alleles will be separated during meiosis into different gametes
homologous chromosomes are pulled randomly to either side and do not affect which way a different pair is pulled apart
crossing over occurs and increases genetic variation
two, identical, daughter cells are produced
Law of independent assortment
each of an organism's two alleles will be separated during meiosis into different gametes
homologous chromosomes are pulled randomly to either side and do not affect which way a different pair is pulled apart
crossing over occurs and increases genetic variation
two, identical, daughter cells are produced
What is one purpose of meiosis?
to create cells with half the total genes of the parent cell
to create identical cells from the parent cell
to keep the genome with the same number of genes as the parent cell
to produce haploid cells for asexual reproduction
If a diploid cell is 2n=8, how many chromosomes should be in the gametes?
4
8
16
2
Humans are 2n=46 and normal gametes have 23 chromosomes. If sex cells did mitosis instead of meiosis, and gametes were created through mitosis, how many chromosomes would the offspring of two humans be after one generation?
46
92
23
12
How do mitotic cells and meiotic cells look different in prophase/prophase I?
meiotic cells would have paired homologous chromosomes
spindle fibers would be in the mitotic cell only
there would be twice as many chromosomes in the meiotic cell
there would be kinetochores in the mitotic cell only
How many divisions does meiosis go through?
2
1
4
23
What is separated during meiosis I?
homologous chromosomes
sister chromatids
spindle fibers
crossing over
What is separated during meiosis II?
sister chromatids
homologous chromosomes
spindle fibers
crossing over
