Unit 2 Genetics Test Review

Organize these options into the right categories

Groups:

(a) Meiosis

,

(b) Mitosis

• 1 cell division

• 2 daughter cells

• Diploid

• creates gametes

• identical

• Haploid

• 2 cell divisions

• genetically diverse

• 4 daughter cells

• for cell growth and repair

Tags

NGSS.HS-LS1-4

What is the main purpose of crossing over?

• create a diploid cell

• create a haploid cell

• increase genetic variation and diversity

• create identical daughter cells

Tags

NGSS.HS-LS3-2

A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have red (RR) flowers?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).

Cross a red flower with a speckled flower. What is the phenotypic ratio?

• 50% red, 50% speckled

• 25% red, 25% blue

• 100% blue

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

A dog with straight fur (Bb) is crossed with a dog with curly fur (bb). What is the probability the offspring will have straight fur?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

Two traits were observed for dogs: color and tail length. For color, black (B) is dominant over tan (b). For tail length, short tails (S) are dominant over long tails (s). What is the genotype for a heterozygous black short-tailed dog?

• BbSs

• BBSS

• bbss

• BBss

Match the following

• 2 sets of chromosomes in a cell

• The type of cell produced in meiosis

• 1 set of chromosomes in a cell

• Diploid

• Gametes

• Haploid

Match each genotype with its description.

• Tt

• Homozygous Recessive

• tt

• Homozygous Dominant

• TT

• Heterozygous

What is the complementary DNA strand for TACGGA?

(a)  

What are two differences between DNA and RNA?

• DNA contains thymine; RNA contains uracil.

• DNA is found in the nucleus; RNA is found in the cytoplasm.
• DNA is single-stranded; RNA is double-stranded.
• DNA is involved in protein synthesis; RNA is not involved.
• DNA is double-stranded; RNA is single-stranded.