Meiosis #1
Presentation
•
Biology
•
10th Grade
•
Medium
Standards-aligned
Jane Claussen
Used 27+ times
FREE Resource
16 Slides • 9 Questions
1
Meiosis
the process that occurs in male and female reproduction systems to produce or form sex cells (sperm and egg)
A cell division process of reducing the number of chromosomes.
2
Multiple Choice
Which statements explain how a mutation in a somatic cell is different from a mutation that occurs in gametes?
Somatic cell mutations occur in cells that give rise to gametes.
Gamete mutations occur in cells that result in apoptosis.
Somatic cell mutations are maintained in the gene pool.
Gamete mutations are expelled from the gene pool.
Somatic cell mutations are generally not passed to offspring.
Gamete mutations are usually passed to offspring
Somatic cell mutations will not be expressed by the individual that contains the mutation.
Gamete mutations will be expressed by the individual.
3
Multiple Choice
Cell mutations within a DNA sequence are —
unnatural events that are harmful to genetic diversity
unnatural events that always affect the phenotype
natural events that produce genetic diversity in organism
natural events that always affect the phenotype
4
Multiple Choice
Any change in the sequence of DNA nucleotides is called a —
transgenic shift
monohybrid trait
single genotype
mutation
5
Know the important events of Meiosis, their significance and the key differences between Meiosis I and Meiosis II
I Will...
Review the process of Meiosis and its significance to sexual reproduction
We Will...
Win for the Day!
6
sexual vs asexual
meiosis vs mitosis
gametes/germ cells vs somatic cells
Gametes
7
8
Homologous pairs - 2 chromosomes (one from mom, one from dad) that have the same length and general appearance
Diploid (2n) - cell has TWO copies of each chromosome (1 from each parent)
46 chomosomes
Haploid (n) - has ONE copy of each chromosome
22 autosomes and 1 sex chromosome
sperm (x or y)
egg (always x)
Diploid (2n)
Haploid (n)
(through DNA replication)
maternal + paternal =
homologous pairs
9
homologous chromosomes = 2 sister chromatids
1 sister chromatid = duplicated chromosomes
Haploid (n)
Haploid (n
chromatid
0
Sister Chromatids
A cell division process of
reducing the number of
chromosomes.
10
Start = Diploid (2n)
11
12
Homologous pairs of chromosomes - split during Meiosis I
13
End - haploid (n)
14
Multiple Choice
During which stage are homologous chromosomes separated?
anaphase of Meiosis I
during the process of Meiosis II
anaphase of Meiosis II
after the completion of Meiosis II
15
Multiple Choice
During which stage does the process of Crossing-over occur?
During the completion of Meiosis II
Prophase of Meiosis I
(Prophase I)
During the start of Meiosis II
Prophase of Meiosis II
(Prophase II)
16
Multiple Choice
The process of Meiosis I starts with a _______ parent cell and ends with two _______ daughter cells.
diploid (2n); haploid (n)
diploid (2n); diploid (2n)
haploid (n); haploid (n)
haploid (n) ; diploid (2n)
17
Know the important events of Meiosis, their significance and the key differences between Meiosis I and Meiosis II
I Will...
Review the process of Meiosis and its significance to sexual reproduction
We Will...
Win for the Day!
Some text here about the topic of discussion
18
Start - haploid (n)
19
sister chromatids - split during Meiosis II
20
Gametes
21
End - haploid (n)
Gamete
Gamete
Gamete
End: Haploid(n)
22
Multiple Choice
During which stage are sister chromatids separated?
anaphase of Meiosis I
during the process of Meiosis II
anaphase of Meiosis II
after the completion of Meiosis II
23
Multiple Choice
The process of Meiosis II starts with 2 _______ daughter cells and ends with 4 _______ sex cells.
diploid (2n); haploid (n)
diploid (2n); diploid (2n)
haploid (n) ; haploid (n)
haploid (n) ; diploid (2n)
24
Multiple Choice
A diploid cell contains __ chromosomes, while a haploid cell contains __ chromosomes.
46 ; 46
46 ; 23
23 ; 46
23 ; 23
25
Know the important events of Meiosis, their significance and the key differences between Meiosis I and Meiosis II
I Will...
Review the process of Meiosis and its significance to sexual reproduction
We Will...
Win for the Day!
Some text here about the topic of discussion
Meiosis
the process that occurs in male and female reproduction systems to produce or form sex cells (sperm and egg)
A cell division process of reducing the number of chromosomes.
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