Meiosis & Genetics Flashcards
About how many genes are in one chromosome? A: 15, B: 1500, or C:150.
B: 1500
Where are chromosomes found in the body? A: in DNA, B: the proteins, or C: the nuclei.
C: The Nuclei
what is it called when chromosomes make up a pair? A: Homozygous, B: Homologous, C: Homogeneous.
B: Homologous
What does the symbol n represent? A: number of chromosomes, B: number of haploids, C: number of gametes.
A: number of chromosomes
What are most cells formed by? A: Prophase, B: Interphase, C: Mitosis.
C: Mitosis
During synapsis chromosomes swap pieces of what? A: Fibers, B: Proteins, C: DNA.
C: DNA
What do the spindle fibers attach to? A: Centromere, B: Sister Chromatids, C: Homologous Chromosomes.
A: Centromere
What happens when the cell undergoes cytokineses? A: the cells stay the same, B: the cells divide, C: the cells multiply.
B: The cells divide.
What happens in Metaphase 2? A: The chromosomes condense. B: A haploid number of chromosomes line up near the center of the cell, C: the cell goes through cell division.
B: A haploid number of chromosomes line up near the center of the cell.
What is one way that meiosis produces non-identical daughter cells? A: During Prophase 1, B: Fertilization, C By crossing over. (Multiple Answers)
A: during Prophase 1 and C: By crossing over.
What is a Trait? A: Characteristics such as hair color or eye color. B: DNA segments that control the production of a protein. C: located inside of genes and DNA.
A: Characteristics such as hair color and eye color.
What do gametes help do? A: They help the sex cells multiply into more cells. B: They convert the cells into diploids. C: They help maintain the same number of chromosomes from generation to generation.
C: They help maintain the same number of chromosomes from generation to generation.
What happens during the crossing over stage? A: Pieces of a chromosome swap with another piece of a chromosome. B: It provides sister chromatids to the chromosomes. C: The chromosomes will attach to the spindle fibers.
A: Pieces of a chromosome swap with another piece of a chromosome.
Anaphase 1 does what? A: Increase the number of chromosomes from n to 2n. B: Reduce the number of chromosomes from 2n to n. C: Keep the chromosomes the same number of n.
B: Reduce the number of chromosomes from 2n to n.
What does Asexual Reproduction do? A: It will randomly combine gametes.B: The rate of mutations are much faster than sexual reproduction. C: The new individual is identical to the parent.
C: The new individual is identical to the parent.
What are the stages of Meiosis? A: Interphase, Anaphase, and Metaphase. B: PMAT and it happens two times. C: PIAT and it happens twice.
B: PMAT and it happens two times.
What is the purpose of Meiosis? A: To get a diploid amount of chromosomes. B: To produce enough chromosomes to keep the body moving. C: To produce gametes, or sex cells.
C: To produce gametes, or sex cells.
During Meiosis how many daughter cells are produced? A: 4. B: 6. C: 2.
A: 4.
What do the cells go through before going through Meiosis and Mitosis? A: Interphase. B: Anaphase. C: Crossing over.
A: Interphase.
What does Interphase do? A: Make the cells shrink and get ready for mitosis. B: It makes the cell grow and copy its chromosomes and prepares for division. C: It makes the cells start to flow through the body more frequently.
B: It makes the cell grow and copy its chromosomes and prepares for division.
What is the goal of Meiosis 1? A: To add chromatids to the homologous pairs. B: To create new cells. C: To separate homologous pairs.
C: To separate homologous pairs.
What happens to the sister chromatids during Meiosis 1? A: They line up towards the middle of the cell. B: They will stay with each other. C: They will split and go to different parts of the cell.
B: They will stay with each other.
What is the goal of Meiosis 2? A: To separate the sister chromatids. B: To keep them together and send them onwards throughout Meiosis 2. C: They condense together forming diploids.
A: To separate the sister chromatids.
When does Crossing over occur? A: During Interphase. B: During Anaphase 2. C: During Prophase 1.
C: During Prophase 1.
What cells does Meiosis occur in? A: Only Non-Reproductive cells. B: In all cells. C: Only Reproductive cells.
C: Only Reproductive cells.
Why is Meiosis Important for sexual reproduction to occur? A: It results in the formation of gametes or sex cells. B: It provides chromatids. C: It helps move the DNA from cell to cell.
A: It results in the formation of gametes or sex cells.
What is the overall purpose of meiosis? A: To get sister chromatids. B: To create gametes. C: To produce DNA.
B: To create gametes.
What is a likely result of crossing over during meiosis I? A: Production of recombinant gametes. B: Decrease in genetic variation. C: Reduction in chromosome number.
A: Production of recombinant gametes.
How many cell divisions occur during meiosis? A: 1. B: 3.
C: 2.
C: 2.
During meiosis, when does the ploidy (number of sets of chromosomes) get reduced from diploid (2n) to haploid (n)? A: Once Telophase 1 of Meiosis 1 is complete. B: Once Prophase 1 of Meiosis 1 is complete. C: Once Anaphase 1 of Meiosis 1 is complete.
A: Once Telophase 1 of Meiosis 1 is complete.
