Meiosis and Monohybrids Exam

What is the purpose of meiosis?

• To copy DNA to RNA

• To create gametes

• To allow cells to divide into sister cells

• to create identical cells

Meiosis is also known as reduction division because

• Crossing over occurs

• The cells created are genetically unique

• The number of chromosomes in the resulting daughter cells is half that of the parent cell

• The number of chromosomes in the resulting daughter cells is double that of the parent cell

Which of the following statements about meiosis are true?

• Statements 1 and 2

• Statements 1 and 3

• statement 3

• statement 1, 2 and 3

How are homologous chromosomes related?

• None

• Homologous chromosomes come from only one parent and are identical

• homologous chromosomes do not exist

• homologous chromosomes are only found together in gametes

• Homologous chromosomes have the same genes but may have different alleles.

What does meiosis produce that mitosis does not?

• 3 and 4

• 2 and 4

• 1 and 3

• 1 and 4

What is the difference between phenotype and genotype?

• The phenotype is the physical expression of the genes and the genotype is the genetic make-up

• They are the same

• The genotype is the physical expression of the genes and the phenotype is the genetic make-up

• Phenotypes are short and genotypes are long

Which of the following are considered heterozygous? (select all that apply)

• Hybrids

• RR

• Rr

• rr

If you cross a heterozygous purple flower with a homozygous recessive white flower, what will be the resulting phenotype?

• None of the answers

• 50% Purple, 50% White

• 75% Purple, 25% White

• 100% Purple

• 100% White

When Gregor Mendel crossed 2 tall pea plants from the F1 generation, 75% plants in the F2 generation were tall and 25% were short. What can we conclude from this result?

• The tall allele is recessive

• The tall allele is dominant

• Flower petal color and plant height genes are on the same chromosome

• The plants in the F1 generation must have been pure breeds.

What is the result of the cross between RR x rr?

R= Round, r=wrinkled

• 25% wrinkled

• 50% wrinkled

• 75% wrinkled

• 0% wrinkled