genetics practice questions. standard 2d: mendel concluded that the alleles for tall stems in pea...
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Genetics Practice Questions
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Standard 2d: Mendel concluded that the alleles for tall stems in pea plants are dominant. Thus, crossing a purebred tall pea plant
with a purebred short pea plant should result in
A all tall plants.B all short plants.C all medium height
plants.D half short and half
tall plants.
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Standard 2d: Mendel concluded that the alleles for tall stems in pea plants are dominant. Thus, crossing a purebred tall pea plant
with a purebred short pea plant should result in
Answer:A all tall plants.
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Standard 2d: In the Punnett Square below, what percentage of the offspring will have purple flowers?
A 25%B 50%C 75%D 100%
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Standard 2d: In the Punnett Square above, what percentage of the offspring will have purple flowers?
Answer:A 25%
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Standard 2d: In the Punnett Square below, what percentage of the offspring are capable of passing on either the trait for white flowers or
the trait for purple flowers to their offspring?
A 25%B 50%C 75%D 100%
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Standard 2d: In the Punnett Square below, what percentage of the offspring are capable of passing on either the trait for white flowers or
the trait for purple flowers to their offspring?
Answer: B 50% because Ww can
pass on a W (white flower gene) or a w (purple flower gene)
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Standard 2c: Some people have hair on the middle segment of each finger and some people do not. This characteristic is under
genetic control. Which of the following statements is true?
A The hair results from a mutation.
B Each person has two or more alleles for this trait.
C The genes that cause this trait are codominant.
D The genes that cause this trait are unknown.
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Standard 2c: Some people have hair on the middle segment of each finger and some people do not. This characteristic is under
genetic control. Which of the following statements is true?
Answer:B Each person has two
or more alleles for this trait.
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Standard 2e: The diagram shows
A DNA.B RNA.C proteins.D ribosomes.
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Standard 2e: The diagram shows
Answer:A DNA.
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Standard 2d: Scientists call an organism that has two different alleles for a trait (Tt)
A a hybrid.B homozygous.C purebred.D a factor.
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Standard 2d: Scientists call an organism that has two different alleles for a trait (Tt)
Answer:A a hybrid.
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Standard 2e: What is DNA?
A an energy-rich organic
compound made of carbon, hydrogen, and oxygen
B a drug that slows down the activity of the central nervous system
C the genetic material that is passed from parent to offspring
D the region of a cell located inside the cell membrane in prokaryotes
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Standard 2e: What is DNA?
Answer:C the genetic material
that is passed from parent to offspring
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Standard 2e: Which of the following is made up of strands of DNA?
A alleleB chromosomeC geneD nucleus
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Standard 2e: Which of the following is made up of strands of DNA?
Answer:B chromosome
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Standard 2e: Which of the following are found in the nucleus of a cell?
A chloroplastsB chromosomesC Golgi apparatusD mitochondria
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Standard 2e: Which of the following are found in the nucleus of a cell?
Answer:B chromosomes
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Standard 2b: At the end of mitosis, chromosomes provide each daughter cell with
A half the parent’s genetic material.B an exact copy of the parent’s genetic material.C twice the amount of the parent’s genetic material.D four times the amount of the parent’s genetic material.
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Standard 2b: At the end of mitosis, chromosomes provide each daughter cell with
Answer:B an exact copy of the parent’s genetic
material.
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Standard 2e: As a result of mitosis in a human body cell, each of the two nuclei formed has which of the following?
A 12 chromosomesB 92 chromosomesC 23 chromosomesD 46 chromosomes
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Standard 2e: As a result of mitosis in a human body cell, each of the two nuclei formed has which of the following?
Answer:D 46 chromosomes
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Standard 2e: Down Syndrome is a genetic condition caused by an extra #21 chromosome, giving a person an abnormal total of 47 chromosomes.
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Standard 2d: Given: Widow’s peak is dominant (W) No widow’s peak is recessive (w)
What would be the phenotype of a child that has Ww?
A widow’s peak B no widow’s peak C maleD female
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Standard 2d: Given: Widow’s peak is dominant (W) No widow’s peak is recessive (w)
What would be the phenotype of a child that has Ww?
Answer:A widow’s peak