Unit 5.2 Chromosomes

Unit 5 
Heredity and evolution

Basic 2
Chromosomes
1 / 10
suivant
Slide 1: Diapositive
BiologieMiddelbare schoolvwoLeerjaar 3

Cette leçon contient 10 diapositives, avec diapositives de texte et 1 vidéo.

time-iconLa durée de la leçon est: 45 min

Éléments de cette leçon

Unit 5 
Heredity and evolution

Basic 2
Chromosomes

Slide 1 - Diapositive

Today's planning
Unit 5 (Book 2/3 B), Basic 2 Chromosomes 


Learning objectives: 
You can explain how each of the parents provides 50% of the chromosomes.
You can say how the sex of a human is determined by sex chromosomes.
You can explain how sexual reproduction causes variation in genotypes.

Slide 2 - Diapositive

Slide 3 - Diapositive

Fill in the gaps
Human cells have ...(1)... chromosomes. Those chromosomes occur in ... (2)... , so you have ...(3)...  pairs of chromosomes in a cell nucleus. The 23rd chromosome pair are the ...(4)... . Women have ...(5)... and men have ...(6)... . 

Slide 4 - Diapositive

Slide 5 - Vidéo

Which cells undergo meiosis and why?

Slide 6 - Diapositive

Body Cell (46)                    Sex cell (23)

Slide 7 - Diapositive

Slide 8 - Diapositive

Slide 9 - Diapositive

LET'S PRACTICE

BS5.1: 2-4, 6, 7 (choose between 8 and 9)


BS5.2: Make exercise 1to 4, 7a, extra: 10 and 11.



Slide 10 - Diapositive