QUIZ #3

A gene on the DNA strand has the sequence TAC – GGA – TTT – ACT. a. Write the complementary mRNA sequence transcribed from the DNA.

• AUG – CCU – AAA – UGA

• ATG – CCT – AAA – TGA

• UAC – GGA – UUU – ACU

• AUG – GGA – UUU – ACU

A gene on the DNA strand has the sequence TAC – GGA – TTT – ACT. b. Determine the amino acid sequence translated (use a codon chart).

• Methionine – Proline – Lysine – Stop

• Methionine – Glycine – Phenylalanine – Stop

• Valine – Proline – Lysine – Stop

• Methionine – Proline – Phenylalanine – Stop

In humans, dimples (D) are dominant over no dimples (d). If two heterozygous individuals (Dd × Dd) have a child: a. What are the possible genotypes?

• DD, Dd, dd

• DD, dd

• Dd, dd

• DD, Dd

In humans, dimples (D) are dominant over no dimples (d). If two heterozygous individuals (Dd × Dd) have a child: What are the genotype and phenotype ratios?

• Genotype ratio: 1 DD : 2 Dd : 1 dd
  (Phenotype ratio: 3 dimples : 1 no dimples)

• Genotype ratio: 1 DD : 1 Dd : 2 dd
  (Phenotype ratio: 2 dimples : 2 no dimples)

• Genotype ratio: 2 DD : 1 Dd : 1 dd
  (Phenotype ratio: 2 dimples : 2 no dimples)

• Genotype ratio: 1 DD : 1 Dd : 2 dd
  (Phenotype ratio: 1 dimples : 3 no dimples)

In humans, dimples (D) are dominant over no dimples (d). If two heterozygous individuals (Dd × Dd) have a child: What is the probability (in percentage) that their child will not have dimples?

• 25%

• 50%

• 75%

• 0%

Bonus: What do you think is my favorite BRANCH OF BIOLOGY?

• ZOOLOGY

• GENETICS

• BIOCHEM

• BOTANY

BONUS: What is my favorite flower?

• Tulips

• Sunflower

• Rose

• Lily