Asexual vs Sexual Reproduction
Presentation
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Easy
Standards-aligned
Tracy Holtz
Used 3+ times
FREE Resource
13 Slides • 6 Questions
1
Inheritance of Traits
TEKS 8.Aanalyze the significance of chromosome reduction, independent assortment, and crossing-over during meiosis in increasing diversity in populations of organisms that reproduce sexually;
We will explore the differences between asexual and sexual reproduction.
I will examine a karyotype of a sexually reproducing organism and identify homologous chromosomes, autosomes and sex-chromosomes and explain the basics of gamete formation.
2
Poll
Which type of reproduction do you think contributes to genetic inheritance of traits?
Asexual Reproduction
Sexual Reproduction
3
Open Ended
What is the difference between asexual reproduction and sexual reproduction?
4
Categorize
1 parent
2 parents
offpsring are identical
offspring are unique
doesn't involved sperm or egg cells
involves sperm and egg cells
uses Somatic cells only
requires Gamete cells
Categorize the characteristics of Asexual and Sexual Reproduction to the best of your current ability.
5
6
Open Ended
What was something new you learned from the video?
7
At your table, share one thing you learned from the video.
You have 1 minute and 30 seconds.
Turn and Talk
8
Asexual Reproduction
A = Not or Without
1 parent
Somatic (body) cell only
No Sperm/egg
Cells are Diploid (2N)
Divide using Mitosis
Genetically identical offspring
9
Sexual Reproduction
2 parents
Sperm and Egg (Gametes)
Parents are Diploid (2N)
Gametes are Haploid (n)
Divide using Meiosis
Offspring are genetically unique
10
11
Before we learn how gametes form, we need to learn a little more about Chromosomes!
12
Chromosomes and Karyotypes
13
Homologous Chromosomes
Same length w/same Genes
Present in Somatic diploid cells only
1 set inherited from each parent
14
15
Open Ended
What is a different Real World concept that you could use to compare Homologous Chromosomes to?
16
Autosome Chromosomes
Chromosome pairs 1-22
Genes for most non-sex-related traits
17
Sex Chromosomes
Determines sex characteristics of organism
X codes for 1K+ proteins
Y codes for ~80
XX indicates female sex
XY indicates male sex
18
Categorize
mainly Somatic cell traits
Sex characteristics
Same length
same genes
1 set from each parent
XX female
XY male
cells made through Mitosis
cells made through Meiosis
Place the characteristics in the correct category.
19
Inheritance of Traits
TEKS 8.Aanalyze the significance of chromosome reduction, independent assortment, and crossing-over during meiosis in increasing diversity in populations of organisms that reproduce sexually;
We will explore the differences between asexual and sexual reproduction.
I will examine a karyotype of a sexually reproducing organism and identify homologous chromosomes, autosomes and sex-chromosomes and explain the basics of gamete formation.
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