Biology Final Chapter 11
Terms in this set (26)
Is meiosis responsible for genetic variation in gametes?
The fusion of male gamete cells with female gamete cells is called
The result of meiosis is two identical daughter cells.
Which of the following is an explanation for independent assortment, a factor in producing genetic variability?
In anaphase I, where how one pair separates does not affect how any other pair separates.
What is the function of the Synaptonemal Complex.
It holds Homologous Chromosome pairs together during Prophase I
Meiosis and mitosis are both processes that involve nuclear division. What is the difference between the two?
Mitosis is nuclear division, which ultimately leads to diploid somatic cells. Meiosis is nuclear division, which ultimately leads to haploid gametes.
Meiosis produces haploid cells, with half the number of chromosomes.
In life cycles that alternate between haploid and diploid stages, _____ acts to reduce the number of chromosomes per cell from two sets to one set.
In life cycles that alternate between haploid and diploid stages, _____ acts to double the number of chromosome per cell from one set to two sets.
In life cycles that alternate between haploid and diploid stages, _____ acts to keep the number of chromosomes per cell the same.
In animals, a single diploid cell called a _____ divides by mitosis to give rise to all the cells of the adult body.
During fertilization, each haploid _____ contains the entire genetic contribution from one of the two parents.
Cells that have one set of chromosomes are called _____.
Cells that have two sets of chromosomes are called ______.
After fertilization, the resulting zygote develops by which of the following processes?
Evidence of crossing over can often be seen under the light microscope as a structure known as a ________.
The spindle apparatus is active in separating chromosomes during Anaphase of mitosis. Does it play a similar role in meiosis?
Synapsis of homologous chromosomes and crossing over take place during _____
Chromosomes line up in pairs along the _____ plate during ______.
metaphase, metaphase 1
The 2 members of each homologous pair are pulled to opposite poles of the cells while sister chromatids remain attached during ______.
Nuclear envelopes reform around 2 separate haploid nuclei during _____.
A new spindle apparatus begins to form in 2 separate haploid cells during _____.
Unpaired chromosomes line up along the metaphase plate during _______.
Sister chromatids separate and are pulled to opposite poles of the cell during ______.
Nuclear envelopes reform around 4 separate haploid nuclei during ____.
In animals, the cells that will eventually undergo meiosis to produce gametes are set aside early in the development. These are