Genetics Test Review

What type of cells are produced through meiosis?

• 2 diploid cells

• 4 somatic cells

• 4 gametes

• 2 haploid cells

How are gametes unique from regular cells in the body?

• They are genetically identical

• They are produced by mitosis

• They are produced 2 at a time

• They are genetically unique haploid cells

How does crossing over contribute to genetic diversity?

• By increasing the genes present in diploid cells

• By producing new gene combinations in gametes

• By selecting only those traits beneficial to the organism

• By creating unique chromosomes through mutations

How is it possible for two cells to appear very different despite having identical gene sequences?

• The cells would have to be heterozygous

• Witchcraft

• Each cell is expressing different genes

• This is only possible if the two cells are stem cells

If two alleles for a gene are codominant, what happens when a person is heterozygous for that trait?

• The person will show the recessive phenotype

• The person will show the phenotype of the more dominant allele

• The person's phenotype will be a blend of the two traits

• The person will express both phenotypes fully

What process does this picture show?

• Mitosis

• Meiosis

• Crossing over

• Incomplete dominance

If a person can produce the gametes AT, AT, aT, aT, what is their original phenotype?

• AATt

• AaTT

• AATT

• AaTt

If a diploid cell has 24 chromosomes, how many chromosomes would a gamete for that organisms have?

• 6

• 12

• 24

• 48

What process produces genetically unique gametes?

• Transcription & Translation

• Mitosis

• Meiosis

• DNA replication

Why are traits considered dominant or recessive?

• Dominant traits are always more common than recessive

• Having dominant traits makes an individual stronger

• Dominant traits give an organism a better chance for survival

• Dominant alleles mask the presence of a recessive allele