Sex Determination
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Lesson duration is: 50 minItems in this lesson
Slide 1 - Open question
Slide 2 - Slide
Slide 3 - Slide
Slide 4 - Slide
How many chromosomes does this person have in a normal body cell?
Slide 5 - Open question
What sex is this person and how do you know?
Slide 6 - Open question
Slide 7 - Slide
Slide 8 - Slide
Red-green colourblindness is caused by a recessive allele on the X chromosome. Why are men more likely to get it?
Slide 9 - Open question
Red-green colourblindness is caused by a recessive allele on the X chromosome. Why can't men pass it onto their sons?
Slide 10 - Open question
Slide 11 - Slide
Slide 12 - Slide
Slide 13 - Slide
Using the letters H or h for the alleles for polydactyly, which of the genotypes would have the disorder?
A
HH
B
Hh
C
hh
Slide 14 - Quiz
What combination of alleles did parents A and B have?
Slide 15 - Open question
Give two possible combinations of alleles for cat D. Use the letters H or h.
Slide 16 - Open question
CASADIL is an inherited disorder caused by a dominant allele. What is the evidence in the diagram that CASADIL is a dominant allele?
Slide 17 - Open question
Is person 7 homozygous or heterozygous for the CASADIL allele? Explain.
Slide 18 - Open question
Slide 19 - Slide
What is polydactyly and is it caused by a dominant or recessive allele?
Slide 20 - Open question
Slide 21 - Slide
Using the letters C or c for the alleles for cystic fibrosis, which of the genotypes would have the disorder?
A
CC
B
Cc
C
cc
Slide 22 - Quiz
Cystic fibrosis is caused by a membrane allele. Both parents are carriers of cystic fibrosis. Suggest what this means.
Slide 23 - Open question
What is the probability that the two carrier parents will have a child with cystic fibrosis?
