![Page 1: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/1.jpg)
Today: More Meiosis plus Asexual vs. Sexual Reproduction
Discussions started this week.
![Page 2: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/2.jpg)
For life to exist, the information (genes) must be passed on.
{Mitosis:producing more cells}
{Meiosis:producing gametes}
Fig 13.5
![Page 3: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/3.jpg)
extremely lowgenetic diversity
greater geneticdiversity
vs.Asexual Reproduction
SexualReproduction
How does sexual reproduction generate genetic diversity?
Fig 46.3
![Page 4: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/4.jpg)
Each pair of chromosomes is comprised of a paternal and maternal chromosome
![Page 5: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/5.jpg)
![Page 6: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/6.jpg)
Fig 13.8
![Page 7: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/7.jpg)
Fig 13.8
4 haploid cells
![Page 8: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/8.jpg)
Fig 13.9
![Page 9: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/9.jpg)
Sexual reproduction creates genetic diversity by combining DNA from 2 individuals, but also by creating genetically unique gametes.
{Producing more cells}
{Producing gametes}
Fig 13.5
![Page 10: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/10.jpg)
Different organisms have different patterns of haploid and diploid stages
Fig 13.6
![Page 11: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/11.jpg)
extremely lowgenetic diversity
greater geneticdiversity
vs.Asexual Reproduction
SexualReproduction
Fig 46.3
![Page 12: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/12.jpg)
Asexual Reproduction
genetically identical to parent
(this tree can reproduce both sexually and asexually)
![Page 13: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/13.jpg)
Why does sexual reproduction exist?
Cons:• Need two individuals• Hard to find mate• Diseases• Competition
Pros:• Genetic diversity
or• Replace damage DNA
![Page 14: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/14.jpg)
Why does sexual reproduction exist?
Cons:• Need two individuals• Hard to find mate• Diseases• Competition
Pros:• Genetic diversity
or• Replace damage DNA
![Page 15: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/15.jpg)
Fig 29.7
Plant Evolution:different plants have different ploidy for the different parts of their life cycle.
![Page 16: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/16.jpg)
Haploiddominant(algae)
Fig 28.22
Diploiddominant(fern)
Fig 29.13
![Page 17: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/17.jpg)
Why does sexual reproduction exist?
Cons:• Need two individuals• Hard to find mate• Diseases• Competition
Pros:• Genetic diversity
or• Replace damage DNA
![Page 18: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/18.jpg)
How important is genetic diversity?
![Page 19: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/19.jpg)
![Page 20: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/20.jpg)
Collected snails from different ponds and determined M/F ratio as well as rates of parasitism
From “Biological Science” 3rd ed. by Scott Freeman -fig 12.14
![Page 21: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/21.jpg)
On average sexually reproducing snails were more common in areas with many parasites
From “Biological Science” 3rd ed. by Scott Freeman -fig 12.14
![Page 22: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/22.jpg)
Does a stressful environment lead to sexual reproduction?
From “Biological Science” 1st ed. by Scott Freeman
![Page 23: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/23.jpg)
extremely lowgenetic diversity
greater geneticdiversity
Asexual Reproduction Sexual Reproduction
How does sexual reproduction generate genetic diversity?
Fig 46.3
Is genetic diversity critical for survival in “stressful” environments?
![Page 24: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/24.jpg)
Sexual reproduction creates genetic diversity by combining DNA from 2 individuals, but also by creating genetically unique gametes.
{Producing more cells}
{Producing gametes}
Fig 13.5
![Page 25: Today: More Meiosis plus Asexual vs. Sexual Reproduction Discussions started this week](https://reader036.vdocuments.net/reader036/viewer/2022062409/5697bff51a28abf838cbda95/html5/thumbnails/25.jpg)
Today: More Meiosis plus Asexual vs. Sexual Reproduction
Discussions started this week.