Chapter 8 - Mitosis and Meiosis (Part 2)

Meiosis
Gametes are produced by _____________.
23
Normal human gametes carry _____ chromosomes.
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Haploid
Once Meiosis I is completed, all the cells are
16
A diploid organism whose somatic (nonsex) cells each contain 32 chromosomes produces gametes containing _____ chromosomes.
Haploid
Meiosis II begins with 2 _________ cells
two, halpoid
Meiosis I produces _____ cells, each of which is _____.
four, haploid
Meiosis II typically produces _____ cells, each of which is _____.
Anaphase II
During _____ sister chromatids separate.
Telophase I
At the end of _____ and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids.
Prophase I
Homologous chromosomes pair during _________
Prophase I
Synapsis occurs during _____.
Anaphase I
Homologous chromosomes migrate to opposite poles during _____.
Metaphase II
During _____ chromosomes align single file along the equator of a haploid cell.
Prophase II
During _____ a spindle forms in a haploid cell.
44 autosomes and 2 sex chromosomes
A human somatic cell contains _____
sporophyte
In alternation of generations, the diploid stage of a plant that follows fertilization is the _____.
two diploid cells
Mitosis results in the formation of _____
two haploid cells
Meiosis results in the formation of ______
the exchange of homologous portions of nonsister chromatids
Crossing over is _____.
Meiosis
Genetic variation occurs when chromosomes are shuffled in _____ and fertilization.
23
What is the Haploid Number?
46
Diploid number is ______
one set of chromosomes in each gamete
What is the result of meiosis
where they cross over
Casmata
Gametes
What are the only haploid cells in animals
spores
Sporophyte makes haploid ________ by meiosis
gametophyte
Each spore grows by mitosis into a haploid organism by called a ________
diploid sporophyte
Fertilization of gametes results in a ____________
meiosis
The zygote produces haploid cells by ________
diploid
Only ______ cells can go through meiosis
4,2
The two cell divisions result in ________ daughter cells, rather than _________ daughter cells in mitosis
half
Each daughter cells has _______ as many chromosomes as the parent cell
homologous chromosomes seperate
What happens during the first stage of Meiosis
meiosis one results in 2 haploid daughter cells
What is reductional division?
Meiosis II results in 4 haploid daughter cells with UNREPLICATED chromosomes
What is equational division
Prophase I
When does synapsis occur
where the x-shaped regions where crossing over occured
What is a chiasmate?
no!
Are the two sister chromatids gentically similar during Metaphase II
protein complexes
What are cohesions?
mutations of genes
What are alleles
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