by Jesse Damiano
| 27 Questions
Note from the author:
Meiosis, Cell division, chromosomal mutations
Gametes are produced by the process of
twice the number of chromosomes found in body cells
two sets of chromosomes
one copy of each chromosome
What is shown in the image above?
anaphase I of meiosis
Chromosomes form tetrads during
prophase I of meiosis
metaphase I of meiosis
anaphase II of meiosis
At the end of meiosis, there are
two haploid daughter cells
four haploid daughter cells.
two diploid daughter cells.
four diploid daughter cells.
How many chromosomes are in a human gamete?
If a eukaryotic cell has 20 chromosomes and it undergoes meiosis, how many cells will result, and how many chromosomes will they contain?
4 cells, each with 20 chromosomes
4 cells, each with 10 chromosomes
2 cells, each with 10 chromosomes
2 cells, each with 20 chromosomes
Cells that are ________ possess a
set of chromosomes
You have homologous pairs of chromosomes in each of your cells. In what way are these pairs of chromosomes similar?
They have exactly the same genes.
They both come from the same parent
They have genes for the same traits
They will stay together during meiosis
What process produces genetic diversity through random distribution of maternal & paternal chromosomes(meaning they can line up on either side of the metaphase plate)?
alignment of the metaphase plate to one side instead of in the middle
From the list below, which choice represents a
difference between sperm production and egg production?
Sperm are produced by mitosis; eggs are produced by meiosis
Sperm are produced by meiosis; eggs are produced by mitosis.
Four mature sperm are produced from one cell; one large egg is produced from one cell.
Eight mature sperm are produced from one cell; two eggs are produced from one cell
Sperm are produced by somatic (body) cells; eggs are produced by gametes
Complete each statement with a word from the word bank below. BE SURE TO SPECIFIY IF THE STAGE IS OCCURING IN MEIOSIS I or MEIOSIS II!!!
half double Prophase I Prophase II Metaphase I Metaphase II Anaphase I Anaphase II gametes somatic cells 2 4 19 20 38 40
An organism has 38 chromosomes in a body cell. After mitosis each cell has 38 chromosomes. After meiosis each gamete has ____________________ chromosomes.
An organism’s gametes have ____________________ the number of chromosomes found in the organism’s body cells.
Sister chromatids inside
cells get separated during this phase
line up along the equator during this phase
At the end of
, ________ daughter cells are created.
At the end of meiosis I, the daughter cells created are DIPLOID or HAPLOID?
Meiosis occurs in what type of cells
Short Answer: Answer the questions below using sentences, a model, or bullet-point list.
Why does meiosis have two cell divisions? (HINT: Think of chromosome number) Why is this important for reproduction?
Explain why the daughter cells produced by meiosis are genetically
from each other, whereas the daughter cells produced by mitosis are not.
events occur during meiosis that give the new cells genetic variation?
When does meiosis occur in girls? In boys?
Label the phases of Meiosis (
be sure to be specific with I or II
). Open the image below and insert text into the numbered boxes by clicking the "T" button on the toolbar to the right.
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Though the stages of meiosis have the same names as the stages of mitosis, they exhibit fundamental differences. What are the main differences between the two processes?
Meiosis differs from mitosis in that the number of chromosomes is halved and genetic variation is introduced in meiosis, but not in mitosis
Meiosis differs from mitosis in that the number of chromosomes is halved and genetic variation is reduced in meiosis, but not in mitosis.
Metaphase and telophase portions of meiosis and mitosis are the same. Meiosis and mitosis are also the same, except for the number of chromosomes. Anaphase I and anaphase are different.
Prophase and telophase portions of meiosis and mitosis are the same. Meiosis II and mitosis are also the same and have the same number of chromosomes. Anaphase I and anaphase are different.
What can you tell about the person that this karyotype is from?
Choose ALL that apply.
The person is female
The person is male
The person has Down's syndrome
The cell the DNA was taken from has gone through S phase
The cell the DNA was taken from was in G1 phase of cell cycle
The person has cancer
Nondisjunction occurred here
This is from a body cell
This is from a gamete
In general, chromosomal mutations usually have much more serious consequences than single gene mutations (point mutations, frameshifts, etc). Explain why.
Identify each type of the chromosomal mutations in the image above. Use the "T" option to enter a text box.
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