DNA and Genetics - Chapter 3
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Slide 1 - Diapositive
Slide 2 - Diapositive
Slide 3 - Diapositive
● Jan has one allele for a long middle finger and one allele for a short middle finger. Jan is
A
Homozygous
B
Heterozygous
Slide 4 - Quiz
Paul has two alleles for blonde hair. Paul is..
A
Homozygous
B
Heterozygous
Slide 5 - Quiz
Guinea pigs can have short or long hair. A long-haired guinea pig and a short-haired guinea pig have a nest of babies. They only have long-haired babies. The babies are
A
Homozygous
B
Heterozygous
Slide 6 - Quiz
A certain flower has white, red and pink flowers. Which phenotypes are homozygous and heterozygous?
Slide 7 - Question ouverte
Slide 8 - Diapositive
Slide 9 - Diapositive
Write down the genotype of the following people. Joe is heterozygous for hair colour
A
AA
B
Aa
C
aa
Slide 10 - Quiz
Write down the genotype of the following people. Matt is homozygous recessive for finger length
A
BB
B
Bb
C
bb
Slide 11 - Quiz
Write down the genotype of the following people. Karl is homozygous dominant for earlobe form
A
EE
B
Ee
C
ee
Slide 12 - Quiz
Slide 13 - Vidéo
What is the difference between a gene and an allele?
Slide 14 - Question ouverte
Dominant allele
recessive allele
an allele that is always expressed in the phenotype
an allele that is only expressed in the phenotype if there is no dominant allele present
Slide 15 - Question de remorquage
Which of the alleles is dominant?
A white and a black dog have puppies. All puppies are white;
A white and a black dog have puppies. All puppies are white;
A
White allele
B
black allele
Slide 16 - Quiz
Which of the alleles is dominant? Ralph is heterozygous for hair colour. His hair is black
A
black hair
B
brown hair
C
blon hair
Slide 17 - Quiz
Which of the alleles is dominant? Hanna has blue eyes. Her father and mother had brown eyes
A
brown eyes
B
blue eyes
Slide 18 - Quiz
Which of the alleles is dominant? A white horse is heterozygous for hair colour;
A
Black hair
B
White hair
