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- 1. Multiple Choice
When a cell is not actively dividing, it is in what phase?
interphase
anaphase
prophase
telophase
Cytokinesis
- 2. Multiple ChoiceBefore a cell can divide, what must happen?Nothing, it is always ready to divideThe number of chromosomes must be cut in halfThe number of chromosomes must doubleThe number of chromosomes must triple.
- 3. Multiple Choice
In which type of cells will mitosis occur?
Egg cells
Sperm cells
Chromatic cells
Somatic cells
- 4. Multiple Choice
What is the name of the process in which DNA (genetic information) is exchanged during meiosis 1?
random fertilization
crossing over
independent assortment
condensing
- 5. Multiple Choice
Which of the following is a true statement about sexual versus asexual reproduction?
Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi.
In sexual reproduction, individuals transmit 50% of their genes to each of their offspring.
In asexual reproduction, offspring are produced by fertilization without meiosis.
Asexual reproduction produces only haploid offspring.
- 6. Multiple ChoiceIn meiosis, the haploid number of chromosomes in a human sex cell is:46922223
- 7. Multiple Choice
Which of the following is the smallest unit that would contain a complete copy of the entire human genome?
one human somatic cell
one human chromosome
all of the DNA of one human
one human gene
- 8. Multiple Choice
Chromosomes that have corresponding traits from the opposite sex parent are called:
Heterogeneous chromosomes
Homologous chromosomes
Sister chromosomes
Matching chromosomes
- 9. Multiple Choice
Another name for a sex cell is a:
gamete
embryo
neuron
osteocyte
endothelial
- 10. Multiple ChoiceAfter meiosis is complete, the new cells:are all identicalare all differentare half identical and half differentare all stretched out
- 11. Multiple Choice
A is:
B is:
C is:A: chromatid
B: centromere
C: chromosomeA: chromosome
B: chromatid
C: centromereA: chromosome
B: centromere
C: chromatidA: centromere
B: chromosome
C: chromatid - 12. Multiple Choice
Place these cells in order of mitosis.
A, B, C, D, E
B, E, D, A, C
C, E, A, D, B
B, D, A, E, C
- 13. Multiple Choice
What scientific process is being shown?
Mixing
Independent assortment
Crossing over
Mending
Random fertilization
- 14. Multiple Choice
Which of the following happens during meiosis I?
Homologous chromosomes of a pair are separated from each other.
The chromosome number per cell is conserved.
Sister chromatids are separated.
Four daughter cells are formed.
- 15. Multiple Choice
Chromatids are separated from each other during which of the following processes?
only during mitosis
only during meiosis I
only during meiosis II
during both mitosis and meiosis II
- 16. Multiple Choice
To visualize and identify meiotic cells at metaphase I with a microscope, what would you look for?
sister chromatids of a replicated chromosome grouped at the poles
individual chromosomes all at the cell's center
an uninterrupted spindle array
pairs of homologous chromosomes all aligned at the cell's center
- 17. Multiple Choice
For a species with a haploid number of 23 chromosomes, how many different combinations of maternal and paternal chromosomes are possible for the gametes?
23
46
460
approximately 8.4 million
- 18. Multiple Choice
During which process does independent assortment of chromosomes occur?
during mitosis only
during meiosis I only
during meiosis II only
during mitosis and meiosis I
- 19. Multiple Choice
A human cell containing 22 autosomes and a Y chromosome is
a sperm.
an egg.
a zygote.
a somatic cell of a male.
- 20. Multiple Choice
If the DNA content of a diploid cell in the G1 phase of the cell cycle is represented by x, then the DNA content of the same cell at metaphase of meiosis I would be
0.25x
0.5x
x
2x
- 21. Multiple Choice
Refer to the drawings in Figure 10.2 of a single pair of homologous chromosomes as they might appear during various stages of either mitosis or meiosis. Which diagram represents anaphase I of meiosis?
I
II
IV
V
- 22. Multiple Choice
Refer to the drawings in Figure 10.2 of a single pair of homologous chromosomes as they might appear during various stages of either mitosis or meiosis. Which diagram(s) represent(s) anaphase II of meiosis?
II only
III only
V only
either II or V
- 23. Multiple Choice
Which of the following types of cells would be produced by meiosis?
a haploid animal cell
a diploid animal cell
a diploid plant cell
a diploid unicellular organism
- 24. Multiple Choice
Which of the following statements best describes a karyotype?
a pictorial representation of all the genes for a species
a display of all of the chromosomes of a single cell
the combination of all the maternal and paternal chromosomes of a species
the collection of all the chromosomes in an individual organism
- 25. Multiple Choice
The somatic cells of a privet shrub each contain 46 chromosomes. To be as different as they are from human cells, which have the same number of chromosomes, which of the following must be true?
Privet cells cannot reproduce sexually.
Genes of privet chromosomes are significantly different from those in humans.
Privet shrubs must be metabolically more like animals than like other shrubs.
Genes on a particular privet chromosome, such as the X, must be on a different human chromosome, such as number 18.
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