CCA review

According to this dihybrid cross, how many different phenotypes can be produced?

Hint: phenotype=physical appearances

• 1

• 2

• 3

• 4

According to this dihybrid cross, how many different phenotypes can be produced?

Hint: phenotype=physical appearances

• 1

• 2

• 3

• 4

A lion and a tiger are in the same genus. A lion and tiger can breed to produce a liger. But if a liger and a liger try to breed, it cannot successfully reproduce. Why does this happen?

• They are not in the same domain

• They are not in the same class

• They are not in the same genus

• They are not in the same species

A horse and a zebra are in the same genus. A horse and zebra can breed to produce a zorse. But if a zorse and a zorse try to breed, it cannot successfully reproduce. Why does this happen?

• They are not in the same domain

• They are not in the same class

• They are not in the same genus

• They are not in the same species

AAbb is crossed with AaBb. What is the probability of having an offspring with AaBb? Hint: mutliply the fractions and then find the percentage.​ (a)  

• 25%
• 50%
• 75%
• 100%

AABb is crossed with AABb. What is the probability of having an offspring with AABb? Hint: mutliply the fractions and then find the percentage.​ ​ (a)  

• 75%
• 100%
• 25%
• 50%

Eye color is on the X chromosome, Red eye allele [R] is dominant to white eye allele [r].

A female fly with genotype XrXr is mated with a male fly with genotype XRY.

Match the following

• 0%

• % of all offspring that are XrXr

• 50%

• % of all offspring that are XRXr

• 50%

• % of all offspring that are XrY

Eye color is on the X chromosome, Red eye allele [R] is dominant to white eye allele [r].

A female fly with genotype XRXr is mated with a male fly with genotype XRY.

Match the following

• 25%

• % of all offspring that are XrXr

• 0%

• % of all offspring that are XrY

• 25%

• % of all offspring that are XRXR

Which sequence of the genetic code would produce a polypeptide with the amino acid sequence Val-Pro-Leu? ​ (a)  

• AUG AGC CCU
• AGA AUG CCA
• GUA CCA CUA

A mutation occurs that creates a new DNA sequence. DNA: TAC-TCG GGA. What amino acid sequence would this produce?​​ ​ (a)  

• Lys-Arg-Thr
• Met-Val-Val
• Met-Ser-Pro