DNA and genetics - Chapter 1
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Slide 1 - Diapositive
Slide 2 - Diapositive
Slide 3 - Diapositive
Your genotype influences your phenotype. But also your environment influences your phenotype. Explain this.
Slide 4 - Question ouverte
Sometimes, your phenotype is different than what the genotypes shows. Give three examples of phenotypic traits that you cannot find in your genotype.
Slide 5 - Question ouverte
Walter’s parents are divorced. His mother has a new boyfriend. Did Walter inherit any traits from his mother’s new boyfriend? Why (not)?
Slide 6 - Question ouverte
Slide 7 - Diapositive
Look at the picture. How many chromosomes can you find in the following cells? Copy the number of the questions and type behind the amount of chromosomes. 1. Cheek cell of a human; 2. Skin cell of a sheep; 3. Egg cell of a pig; 4. Egg cell of a donkey; 5. Sperm cell of a dog; 6. Sperm cell of a buffalo
Slide 8 - Question ouverte
Horses and donkeys can have children together. How many chromosomes will you find in the skin cell of a hinnie (donkey/horse hybrid)?
Slide 9 - Question ouverte
Ties is doing research. He is looking at a cell with 39 chromosomes. Explain what type of cells this is (sex cell or body cell) and which organism from the table the cell is.
Slide 10 - Question ouverte
Is the person in the karyogram a boy or a girl? Explain how you can see this.
Slide 11 - Question ouverte
How many chromosomes does this person in the karyogram have?
Slide 12 - Question ouverte
Slide 13 - Diapositive
What is the difference between an allele and a gene?
Slide 14 - Question ouverte
Stacey says: “Eye colour is a good example of an allele.”
Max says: “I disagree, eye colour is not an example of an allele but of a gene.”
Explain who is right.
Max says: “I disagree, eye colour is not an example of an allele but of a gene.”
Explain who is right.
Slide 15 - Question ouverte
Boys and girls have different genes. On which chromosome do you expect to find the genes that make boys, boys?
Slide 16 - Question ouverte
Farah is lactose intolerant. Lactose intolerance is a genetic condition. You cannot digest milk and other dairy products. Explain if the gene causing lactose intolerance is present only in the cells of the digestive system or in all the body cells.
