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WorksheetsMeiosis
Total questions: 24
Worksheet time: 17mins
Chromosomes are made of (choose all correct answers)
Lipids
DNA
Proteins
Water
Where are chromosomes located?
(a)
A chromosome consists of 2
Spindles
Chromatids
Centrioles
Nuclei
Homologous chromosomes are
None of the above
2 corresponding chromosomes that carry the same genes
2 unrelated chromosomes that do not have the same genes
2 small parts of a larger chromosome
None of these
Which of the following statements are true about homologous chromosomes? Circle all that are true.
They are a pair of chromosomes
They are similar
Their genes are in different orders
They are identical
They carry the same genes in the same order
When an egg is fertilized, it becomes a (a) .
In which phase of meiosis do homologous chromosomes pair up?
Anaphase II
Metaphase I
Prophase I
Telophase II
Anaphase II
Metaphase I
Prophase I
Telophase II
What is crossing over?
When 2 chromosomes swap entire chromatids with each other
When 3 chromosomes pair up instead of 2
When homologous chromosomes exchange corresponding sections of genes
When one chromosome crosses over to another cell
When does crossing over occur?
Prophase I
Anaphase I
Telophase II
Metaphase I
During which phase do homologous pairs of chromosomes line up across the middle of the cell?
Prophase I
Anaphase I
Telophase II
Metaphase I
During which phase do homologous pairs of chromosomes move away from each other?
Prophase I
Anaphase I
Telophase II
Metaphase I
In telophase I and II, what reforms around the sets of chromosomes at each end of the cell?
Spindle fibers
Cellular membrane
Nuclear membrane
Cytoplasm
True or false: Homologous pairs of chromosomes line up in the middle of the cell in metaphase II.
(a)
Describe the process of meiosis.
a process that prevents cell replication due to serious errors
a cell replication process that results in 2 identical diploid daughter cells
a cell replication process that results in 4 haploid genetically different daughter cells
the process during interphase where the chromosomes are duplicated
Meiosis creates cells called (a) .
Meiosis occurs in what type of cells?
(a)
_______________ cells are diploid because they have ____ sets of chromosomes.
Somatic, 2
Germ, 1
Somatic, 4
Germ, 2
How many chromosomes are in human diploid cells?
(a)
Gametes are haploid, meaning they contain (a) of the number of chromosomes as body (somatic) cells.
Human gametes contain (a) chromosomes.
Describe the end result of meiosis 1.
3 identical diploid cells
2 different diploid cells
4 haploid different cells
4 haploid identical cells
How does the process of crossing over lead to genetically different offspring?
entire chromosomes switch places so the pairs of chromosomes are not similar
genes from one organism cross over to another organism, which mixes up the genes
homologous chromosomes exchange sections of genes, which produces new combinations of genes
If a sex cell starts meiosis with 20 chromosomes, it will have ________ chromosomes after meiosis I and _______ chromosomes after meiosis II.
20, 10
20,20
40, 20
10, 5
If an organism's haploid number is 30, what is its diploid number?
(a)
