Mitosis + Meiosis Flashcards
What is the best explanation for why chromosomes line up in the center of the cell before starting to split apart during mitosis.
To make sure each daughter cell gets the correct amount of DNA.
Centromeres divide in which phase of mitosis
Anaphase
The nuclear envelope breaks down in ______ during mitosis
Prophase
What happens during meiosis 1
Homologous chromosomes separate into two different cells
What happens before meiosis occurs (pre-meiosis)
DNA replicates
Which of these events occur during Meiosis 2:
A. DNA replicates
B. Homologous chromosomes separate into two cells
C. Replicated chromosomes are separated into sister chromatids and segregated into daughter cells
C.
What is the difference between the parent cell (pre-meiosis) and one of the four daughter cells
The daughter cells have half as much genetic information as the parent cell; one copy of each chromosome instead of a pair of each chromosome
During which phase of meiosis, meiosis 1 or 2, can homologous chromosomes exchange some genetic information
Meiosis 1
At what stage in meiosis, meiosis 1 or 2, would you consider the cells undergoing meiosis haploid cells
After meiosis 1
What is the correct order of phases during mitosis
Prophase, metaphase, anaphase, telophase
What stage of mitosis does the nuclear membrane break down
Prophase
The phase in cell division, in which the parent cell splits into two new daughter cells, is called…
Cytokinesis
In mitosis, during prophase, the ______ move towards the poles of the cell, and a spindle begins to form between them
Centrioles
In which phase of mitosis does the membrane around the nucleus disappear
Prophase
What is the phase of mitosis in which spindle fibers attach to the centromeres of sister chromatids
Metaphase
In which stage of the cell cycle is the nucleolus still visible
Interphase
What is the stage of mitosis in which chromosomes uncoil and spindle fibers break down
Telophase
Which stage of meiosis occurs first
Prophase 1
During Prophase 1, chromosomes from each parent pair up based on their similarity. These paired chromosomes are called _______.
Homologous
Dogs have 78 chromosomes in somatic cells, how many do they have at the end of meiosis
39
What types of cells are produced at the end of meiosis
Haploid and gamete
The number of cells present in a horse’s gamete cells is 32, how many chromosomes are in it’s somatic cells before meiosis and interphase
64
Crossing over occurs in what stage of meiosis
Prophase 1
What are the phases of meiosis in order
Prophase 1, metaphase 1, anaphase 1, telophase 1, cytokinesis (end of meiosis 1), prophase 2, metaphase 2, anaphase 2, and telophase 2 and cytokinesis (end of meiosis 2)
Mitosis is for…
Growth, development, and repair
Meiosis is…
The same mechanism as mitosis in a new way. For a different purpose.
The only cells in a human that are haploid cells are…
Sperm and egg cells
A haploid cell has how many sets of chromosomes
1
A diploid cell has how many sets of chromosomes
2
