Evolution Sources of variation/ repeat

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Slide 1: Tekstslide

BiologieMiddelbare schoolvwoLeerjaar 4

In deze les zitten 28 slides, met interactieve quizzen, tekstslides en 1 video.

Lesduur is: 45 min

Onderdelen in deze les

Slide 1 - Tekstslide

Slide 2 - Tekstslide

What is the difference between phenotype and genotype?

Slide 3 - Open vraag

Genotype vs Phenotype

Your genotype (the information in your DNA) will influence your phenotype (how you look).

Because of that, your survival/fitness will increase/decrease.

Slide 4 - Tekstslide

Slide 5 - Video

From a biological perspective, how did Matt Fraser become the fittest man on Earth?

Slide 6 - Woordweb

Slide 7 - Tekstslide

Continuous vs discontinuous variation

Continuous; gradually, lots of variation, environment influences survival

Discontinuous; cut-off groups, you're either 'this' or 'that', environment does not influence survival (mostly)

Slide 8 - Tekstslide

GENETIC VARIATION

Slide 9 - Tekstslide

Slide 10 - Tekstslide

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Slide 12 - Tekstslide

An ejaculation of a healthy man consists of 200-500 million sperm cells. Independent assortment has led to a huge genetic variation. Will all possible gametes be present in this ejaculation?

Slide 13 - Open vraag

Slide 14 - Tekstslide

MUTATIONS

Slide 15 - Tekstslide

What are the five sources of genetic variation?

Slide 16 - Open vraag

Slide 17 - Tekstslide

Five types of genetic variation

1. Crossing-over

2. Independent assortment of chromosomes in meiosis

3. Random fertilization of gametes

4. Random mating

5. Mutations

Slide 18 - Tekstslide

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Slide 20 - Tekstslide

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Homework

Mandatory: Do the assignment on Worldviews and Evolution; write an essay of maximum one page.

Make the assignment on the Peppered Moth Game

Slide 28 - Tekstslide