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Genetics Review
Test Description: Please answer the review questions and complete your study guide.
Instructions: Answer all questions to get your test result.
1) Multicellular organisms undergo mitosis because
A
mitosis allows for reproduction with male and female gametes.
B
mitosis produces identical cells to the original dividing cell.
C
mitosis increases variation within an organism.
D
mitosis produces cells that are different from the original dividing cell.
2) Mendel hypothesized that gametes have only one factor or allele for each inherited trait. This hypothesis is supported by the observation that
A
diploid cells are produced by mitosis
B
haploid cells are produced by meiosis
C
diploid cells are produced by meiosis
D
haploid cells are produced by mitosis
3) Mendel experimented with garden peas. One of the traits he looked at was texture of the pea coat. If we said the pea coat was smooth what are we looking at?
A
phenotype
B
alleles
C
chromosomes
D
genotype
4) Two pink-flowering plants are crossed. The offspring percentages are 25% red, 25% white and 50% pink. What would the parent's genotypes be?
A
both homozygous dominant
B
one homozygous dominant, one homozygous recessive
C
both heterozygous
D
both homozygous recessive
5) 3' GCTTAGTCAAG 5' Which of the following nucleotide base sequences complements the section of DNA modeled above?
A
5' ATCCGACTGGA 3'
B
5' UTCGAAGACTG 3'
C
5' CGAATCAGTTC 3'
D
5' CGATGTCTTAG 3'
6) To create bacteria that produce human insulin, scientists insert the human gene of interest into the bacterial
A
circular chromosome
B
cell membrane
C
plasmid
D
cell wall
7) Which of the following is an example of gene cloning?
A
the fastest deer surviving in the wild
B
only allowing dogs to breed if they have good temperaments
C
genetically modifying corn plants to produce the Bt toxin
D
choosing to plant seeds fro the reddest, juiciest tomatoes
8) Which of the following is a reason why cells divide?
A
to maintain a surface area large enough to support their cytoplasm
B
to increase the volume of their cytoplasm
C
to decrease their amount of RNA
D
to mutate their DNA
9) Eukaryotic cells do not reproduce through binary fission. Instead they reproduce through a process called
A
meiosis
B
secondary fission
C
conjugation
D
mitosis
10) A __________ is a piece of DNA that is transcribed.
A
chromatid
B
chromosome
C
gene
D
centromere
*select an answer for all questions
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