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WorksheetsAP Biology Cell Cycle, Mitosis, Meiosis
Total questions: 12
Worksheet time: 3hrs 0mins
Grace is studying cell biology and measures the amount of DNA in a cell right after mitosis, finding it to be 8 picograms. How many picograms of DNA would be found in a nucleus in the G2 phase?
4
8
16
24
What causes genetic variation? Choose ALL that apply.
fertilization
crossing over of chromosomes
random assortment of chromosomes during metaphase
asexual reproduction
The process depicted in the image above is best summarized by which of the following descriptions?
During the synthesis phase of the cell cycle, DNA molecules replicate to generate identical daughter cells
Centromeres align specific gene sequences of homologous chromosomes during mitotic divisions.
The spindle apparatus attaches at chiasma during metaphase of mitosis.
During meiosis, crossing over leads to recombination of alleles between homologous chromosomes
Meiosis results in ______.
4 genetically unique haploid gametes
4 genetically unique diploid cells
2 genetically identical cells
4 genetically identical cells
Which of the following characteristics would be most important for a chemotherapeutic drug designed to treat cancer cells?
It specifically inhibits cells entering G0.
It specifically inhibits the cell division cycle in rapidly dividing cells.
It does not interfere with metabolically active cells.
It is safe enough to prevent all apoptosis.
Mitosis results in...
2 identical diploid cells
4 unique diploid cells
2 unique haploid cells
4 identical haploid cells
A cell has completed meiosis I and the first cytokinesis, and is just beginning meiosis II. Which of the following statements describes its genetic contents?
It has half the amount of DNA as the cell that began meiosis.
It has twice the DNA of the cell that began meiosis.
It has one-fourth the DNA and one-half the chromosomes as the cell that began meiosis.
It is genetically identical to the other cells produced by this cytokinesis
Genetic variation leads to genetic diversity in populations and is the raw material for evolution. Which of the following statements best represents the connection between reproduction and evolution?
Plants that use sexual reproduction are rare since this type of reproduction in plants does not contribute to genetic diversity and evolutionary pressures select against them.
In order for evolutionary pressures to affect sexually reproducing organisms, mutations must occur in the zygote after fertilization.
Since prokaryotic organisms reproduce asexually, they have no mechanism to add genetic diversity for evolutionary pressures to act upon.
Sexual reproduction increases genetic variation because random mutations can be shuffled between organisms.
