Mendelian Genetics: Understanding Inheritance Patterns in Cats, MendAliens, Humans, and Chickens

Question 4

The possible genotypes of the pictured cat are:

• 'Long fur with some white patches': llWw
• 'Long fur without any white patches': llww

Question 5

The possible genotypes and phenotypes of their offspring are:

• Genotype: RrEe ('round shaped red eyes')
• Phenotype: Round shaped red eyes

Question 6

The possible genotypes and phenotypes of their offspring are:

• Genotype: XhY ('haemophilia carrier male')
• Phenotype: Unaffected male
• Genotype: XhXh ('haemophilia affected female')
• Phenotype: Haemophilia affected female

Would any potential male offspring have haemophilia? Yes, there is a 50% chance that a male offspring will inherit the haemophilia allele.

Would any potential female offspring have haemophilia? No, female offspring would not have haemophilia. They would be carriers (XhX) as they received a dominant unaffected X chromosome from their mother.

Question 7a

The possible genotypes and phenotypes of their offspring are:

• Genotype: Bb ('black')
• Phenotype: Black
• Genotype: BbWw ('bluey-grey')
• Phenotype: Bluey-grey
• Genotype: bb ('white')
• Phenotype: White

Question 7b

The possible genotypes and phenotypes of their offspring are:

• Genotype: BB ('black')
• Phenotype: Black
• Genotype: BBWw ('bluey-grey')
• Phenotype: Bluey-grey
• Genotype: Bb ('black')
• Phenotype: Black
• Genotype: BbWw ('bluey-grey')
• Phenotype: Bluey-grey
• Genotype: bb ('white')
• Phenotype: White

Question 8

The possible blood types of their offspring are:

• Blood type A: IAIA
• Blood type B: IBIB
• Blood type AB: IAIB
• Blood type O: ii