5.5 + 5.6 3VHT

LET'S CHECK THE HOMEWORK

Download the answers from SOM

We will start with the rest of the lesson at 15:20

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Slide 1: Slide

BiologieMiddelbare schoolhavo, vwoLeerjaar 3

This lesson contains 13 slides, with interactive quizzes and text slides.

Lesson duration is: 50 min

Items in this lesson

LET'S CHECK THE HOMEWORK

Download the answers from SOM

We will start with the rest of the lesson at 15:20

Slide 1 - Slide

When someone has two different alleles in their genotype we call them ...

Slide 2 - Open question

When someone does not have a disease, but can pas on the allele for the disease to their offspring we call them a ...

Slide 3 - Open question

When someone is homozygous recessive we show that with the following letters:

Slide 4 - Quiz

When calculating probabilities, the first generation is called the ... generation.

Slide 5 - Quiz

TODAY. LEARN MORE ABOUT...

Genetic diseases
What if a gene is located on a X-chromosome?

Slide 6 - Slide

DO YOU REMEMBER?

Slide 7 - Slide

DO YOU REMEMBER?

Slide 8 - Slide

EXPLAIN IN YOUR OWN WORDS:
How can a mutation lead to a disease?

Slide 9 - Open question

SEX-LINKED GENES

- Genes that are located on the X-chromosome.
- Notation of alelles: XH, Xh, Y
- Examples are colour-blindness, baldness, heamophilia.

Why is it important to know if a gene is sex-linked?

Slide 10 - Slide

Slide 11 - Slide

LET'S PRACTISE TOGETHER

A mother who is a carrier for colour-blindness gets a child with a father who has normal vision.

What are the probabilities of their children being colour-blind? Use a Punnet square!

Slide 12 - Slide

LET'S PRACTISE!

Download the exercises (for 5.5 & 5.6) linked on SOM.

Answer the exercises to practise how to calculate probabilities for sex-linked genes & apply your knowledge on mutations.

OR ... discuss the homework (on 5.4) with AKU before you continue with the next topic.

Slide 13 - Slide