Unit 3 - BS 3

Basics 3 - Sexual reproduction
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Slide 1: Tekstslide
BiologieMiddelbare schoolvwoLeerjaar 3

In deze les zitten 18 slides, met interactieve quizzen, tekstslides en 2 videos.

Onderdelen in deze les

Basics 3 - Sexual reproduction

Slide 1 - Tekstslide

Today's plan
1. HW Qs??
2. Review last lesson
3. Sexual reproduction 
4. Asexual reproduction
4. Twins

Slide 2 - Tekstslide

What is the difference between an allele and a gene?

Slide 3 - Open vraag

Stacey says: “Eye colour is a good example of an allele.”
Max says: “I disagree, eye colour is not an example of an allele but of a gene.”
Explain who is right.

Slide 4 - Open vraag

Fertilisation

23 chromosomes mother


23 chromosomes father


46 chromosomes in the fertilised egg cell

(= 23 pairs of chromosomes)


body cells   ovary cells      testes cells   body cells            
egg cell
sperm cell
fertilisation
zygote

Slide 5 - Tekstslide

Slide 6 - Tekstslide

Slide 7 - Tekstslide

Slide 8 - Tekstslide

Slide 9 - Tekstslide

sex chromosomes
Female:
Male:

Slide 10 - Tekstslide

Karyotype
   Male karyotype            Female karyotype

Slide 11 - Tekstslide

How many chromosomes does this person in the karyogram have?

Slide 12 - Open vraag

Slide 13 - Video

Some plants can be regrown completely from a single branch. Is this sexual or asexual reproduction?
A
Sexual reproduction
B
Asexual reproduction

Slide 14 - Quizvraag

Slide 15 - Tekstslide

Slide 16 - Video

Marc and Kevin are identical twins. Marc marries to Susan and Kevin marries Erica. Susan and Erica are also identical twins. When both couples have a baby boy, are those baby boys geneticall identical? Explain your answer.

Slide 17 - Open vraag

Do now:
Qs 8 t/m 10

Slide 18 - Tekstslide