Sex Determination (OCR GCSE Biology A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How many pairs of chromosomes do human body cells have?
How many pairs of chromosomes do human body cells have?
23 pairs
How many pairs of chromosomes control characteristics?
How many pairs of chromosomes control characteristics?
22 pairs
Which pair of chromosomes carries sex determining genes?
Which pair of chromosomes carries sex determining genes?
The 23rd pair
What are the two possible sex chromosomes in the 23rd pair?
What are the two possible sex chromosomes in the 23rd pair?
X and Y chromosomes
How do Y chromosomes compare in size to X chromosomes?
How do Y chromosomes compare in size to X chromosomes?
Y chromosomes are much smaller
What sex chromosomes do females have?
What sex chromosomes do females have?
Two X chromosomes
What sex chromosomes do males have?
What sex chromosomes do males have?
One X and one Y chromosome
What type of sex chromosome do females pass on in their eggs?
What type of sex chromosome do females pass on in their eggs?
Only X chromosomes
What sex chromosomes can males pass on in their sperm?
What sex chromosomes can males pass on in their sperm?
X or Y chromosomes
What is the chance of a child being male?
What is the chance of a child being male?
50%