Sex determination

In this lesson we will name and recognise the chromosomes that determine sex and interpret diagrams to show how sex is inherited.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.Which of the following is a disorder caused by a recessive allele?

1/6

Q2.Which of the following is a disorder caused by a dominant allele?

2/6

Q3.Couples who carry alleles for a disorder but want to have a baby may choose to undergo...

3/6

Q4.The diagram shows inheritance of Tay-Sachs disease. Identify a female with the disease.

4/6

Q5.How does this diagram show that Tay-Sachs disease is caused by a recessive allele?

5/6

Q6.A couple both carry an allele for cystic fibrosis. They are concerned about the impact of having a child with the disorder would have on their current children. What type of consideration is this?

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.Which of the following is a disorder caused by a recessive allele?

1/6

Q2.Which of the following is a disorder caused by a dominant allele?

2/6

Q3.Couples who carry alleles for a disorder but want to have a baby may choose to undergo...

3/6

Q4.The diagram shows inheritance of Tay-Sachs disease. Identify a female with the disease.

4/6

Q5.How does this diagram show that Tay-Sachs disease is caused by a recessive allele?

5/6

Q6.A couple both carry an allele for cystic fibrosis. They are concerned about the impact of having a child with the disorder would have on their current children. What type of consideration is this?

6/6

Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

  • Click "Close Video"
  • Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Sex Determination

This quiz will assess you on knowledge learned in today's lesson, as well as what you have learned in earlier lessons.

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.How many chromosomes are in a human body cell?

1/5

Q2.What are the female sex chromosomes?

2/5

Q3.What are the male sex chromosomes?

3/5

Q4.What is the probability a couple's first baby is born female?

4/5

Q5.A couples first baby was born male. What is the probability a couple's second baby is also born male?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Sex Determination

This quiz will assess you on knowledge learned in today's lesson, as well as what you have learned in earlier lessons.

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.How many chromosomes are in a human body cell?

1/5

Q2.What are the female sex chromosomes?

2/5

Q3.What are the male sex chromosomes?

3/5

Q4.What is the probability a couple's first baby is born female?

4/5

Q5.A couples first baby was born male. What is the probability a couple's second baby is also born male?

5/5

Lesson summary: Sex determination

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