Sexual reproduction results in offspring with more genetic variation.
[CER] Sexual reproduction requires more time and energy to find a mate, court them, and produce offspring. Therefore, sexual reproduction is less advantageous for the long term survival of a species compared to asexual reproduction. AGREE or DISAGREE?
Make a claim. Provide your evidence and justify your reasoning. |
/ Ii / Investigate
1. Gene Squares - investigate how Punnett squares help you predict patterns of inheritance.
2. Reproduction - learn more about the difference between sexual and asexual reproduction. 3. The Honeycrisp Apple - investigate whether or not we have engineered the perfect apple. 4. DNA Fingerprinting - investigate what makes your DNA fingerprint unique. |
/ iII / Level Up!
During this lesson you will learn more about individuals of the same species vary in how they look, function, and behave.
✎Notes:
- In sexually reproducing organisms, each parent contributes half of the genes acquired (at random) by the offspring.
- Individuals have two of each chromosome and hence two alleles of each gene, one acquired from each parent.
- These versions may be identical or may differ from each other.
- In addition to variations that arise from sexual reproduction, genetic information can be altered because of mutations.
- Though rare, mutations may result in changes to the structure and function of proteins.
- Some changes are beneficial, others harmful, and some neutral to the organism.
/ IV / choose your path
ACCOMPLISHED [+3 points]
Use this Punnett Square tool to work out patterns of inheritance. Tap MATE and see all possible gene combinations for offspring based on the parents' genes. 1. What genetic combinations are possible? 2. Which genetic combination results in a 25% chance of inheriting the trait/disease. Show your work using Punnett squares. |
ADVANCED [+4 points]
Using the models below which type of cell division (mitosis or meiosis) will result in more genetic variation? Using 2 or more details explain why the model you chose will result in a greater amount of genetic variation in offspring compared to their parents compared to the other type of cell division. |
MASTER [+6 points]
Research an organism of your choice that reproduces asexually and another organism of your choice that reproduces sexually. Create your own models using Punnett squares and diagrams to describe why genetic variation is less in asexual offspring compared to offspring as a result of sexual reproduction. |
/ V / Knowledge Check
✓ MASTERY CHECK
National Research Council 2012. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. Washington, DC: The National Academies Press. https://doi.org/10.17226/13165
This site contains original content that may not be authorized for use by the creator and is legally used under the fair use principles section 107 of the Copyright Act of 1986 (17 U.S. Code § 107)
The official NGSS website. https://www.nextgenscience.org
LS3.B, MS-LS3-2
Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation. (Cause and Effect) [MS-LS3-2]
This site contains original content that may not be authorized for use by the creator and is legally used under the fair use principles section 107 of the Copyright Act of 1986 (17 U.S. Code § 107)
The official NGSS website. https://www.nextgenscience.org
LS3.B, MS-LS3-2
Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation. (Cause and Effect) [MS-LS3-2]