{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

Ɛhia

1

Hemophilia is a sex‐linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman who is a heterozygous carrier?

There is a 0% chance that their sons will have hemophilia.

There is a 100% chance that their sons will have hemophilia.

There is a 0% chance that their daughters will have hemophilia.

There is a 50% chance that their daughters will have hemophilia.

Ɛhia

1

What can you conclude about the trait shown in the pedigree above?

The trait is X-linked and recessive.

The trait is X-linked and dominant.

The trait is Y-linked and dominant.

The trait is autosomal and dominant.

Ɛhia

1

Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram above. Why can bacteria recognize a human gene and then produce a human protein?

Bacterial cells contain the same organelles as human cells.

The basic components of DNA are the same in humans and bacteria.

Bacterial cells and human cells contain the same kind of chromosomes.

RNA replication in bacteria and humans is the same.

Ɛhia

1

Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait and therefore occurs only in individuals who are homozygous recessive. Which set of parents can have a child with type O blood?

one parent with type AB blood and the other parent with type O blood

one parent with homozygous type A blood, and the other parent with homozygous type B blood

one parent with type AB blood, and the other parent with type A blood

one parent with heterozygous type A blood, and the other parent with heterozygous type B blood

Ɛhia

1

A human baby boy inherits a recessive allele from his mother. In which circumstance would he most likely show the trait coded for by the recessive allele?

the allele is on the Y chromosome

the allele is on an autosomal chromosome and the baby is a twin

the baby inherits the dominant allele from his father

the allele is on the X chromosome

Ɛhia

1

The diagram above depicts a diploid cell containing two pairs of homologous chromosomes. Assume that the cell undergoes meiosis. Given the law of independent assortment, what would be the possible genotypes of the gametes that result from meiosis?

9 possibilities: SSTT, SSTt, SStt, SsTT, SsTt, Sstt, ssTT, ssTt, and sstt

4 possibilities: S, s, T, and t

4 possibilities: ST, St, sT, and st

2 possibilities: ST and st

Ɛhia

1

In guinea pigs, black coat color (B) is dominant over white coat color (b) and short hair (S) is dominant over long hair (s). Based upon the dihybrid cross shown below, what is the genotype and phenotype for the offspring represented by the letter X?

Bbss; brown coat, long hair

Bbss; black coat, long hair

BBss; black coat, long hair

BbSs; black coat, short hair

Ɛhia

1

Which row in the chart above indicates the correctly matches each event with its associated cell division process?

Row (1)

Row (2)

Row (3)

Row (4)

Ɛhia

1

Which cellular process is illustrated by the diagram above?

Fertilization

Mitosis

Binary fission

Meiosis

Ɛhia

1

The diagram above illustrates an event called "crossing over" that commonly occurs during Meiosis I. Based on the diagram, which of the following statements best describes the important effect that this event has on the gametes produced by meiosis?

The gametes will be more abundant, increasing the probability of successful fertilization

The chromosomes will be more abundant, having two sister chromatids rather than single chromatids

The homologous pairs will be separated, so that each gamete receives a single pair

The gametes will be more genetically diverse, with a greater variety of allele combinations

Ɛhia

1

Animal "pharming" is becoming more popular as the demand for human proteins and vaccines continues to grow. Animal pharming is the process of using transgenic animals to produce human drugs such as insulin and human growth hormone. Transgenic animals are animals which have been genetically transformed by splicing and inserting foreign genes into their chromosomes. If successful, the inserted gene can enable an animal to make certain proteins in its milk, blood, sperm, or eggs. Which of the following is NOT true about transgenic animals?

Transgenic animals can be easily tested for the new gene.

Transgenic animals cannot pass their ability to produce the desired drug to its offspring.

Transgene DNA may insert itself into the genome in a way that disrupts the animal’s normal gene function.

Transgenic animals can produce the desired drug at high levels without endangering its own health.

Ɛhia

1

Genetic engineering has both positive and negative outcomes. One of the most common areas where genetic engineering is used is in agriculture. If farmers plant more genetically modified crops, which of the following negative outcomes could occur?

An increase in the contamination of the water supply

An increase in the use of pesticides

A decrease in genetic diversity of the crops

A decrease in crop productivity

Ɛhia

1

Rice, the most popular food crop in the world, can be successfully grown only in certain places. If trends in climate change continue, the areas in which rice currently grows will be significantly reduced. Which of the following is the best way that biotechnology can keep the harvest of rice from decreasing?

Identifying new areas with soil fertile enough for rice production

Developing clean energy sources to reduce carbon dioxide production worldwide

Genetically engineering rice plants that are tolerant of change in the environment.

Seeding clouds with solid carbon dioxide to produce more rainfall where it is needed.

Ɛhia

1

Rasheed crossed plants that were heterozygous—have two different alleles—for the traits of flower color, seed color, and seed shape as part of an investigation designed to verify the results of Gregor Mendel’s experiments. The table above displays the results.
Based on the information in the table, which of the following is a valid conclusion?

White flowers are dominant.

Flower color is the result of environmental conditions.

Wrinkled seeds are a recessive trait.

Yellow seeds are a recessive trait.

Ɛhia

1

For a certain animal, black fur color is dominant over brown fur color. The pedigree below shows a cross between two individuals that have black fur. Which of the following must be true?

Both parents are homozygous for the black-fur trait.

The offspring with brown fur has a mutant gene for fur color.

Both parents are heterozygous for the black-fur trait.

One parent is heterozygous and one is homozygous for fur color.

EOC Practice: Genetics

EOC Practice: Genetics

Hemophilia is a sex‐linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman who is a heterozygous carrier?

What can you conclude about the trait shown in the pedigree above?

Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram above. Why can bacteria recognize a human gene and then produce a human protein?

Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait and therefore occurs only in individuals who are homozygous recessive. Which set of parents can have a child with type O blood?

A human baby boy inherits a recessive allele from his mother. In which circumstance would he most likely show the trait coded for by the recessive allele?

The diagram above depicts a diploid cell containing two pairs of homologous chromosomes. Assume that the cell undergoes meiosis. Given the law of independent assortment, what would be the possible genotypes of the gametes that result from meiosis?

In guinea pigs, black coat color (B) is dominant over white coat color (b) and short hair (S) is dominant over long hair (s). Based upon the dihybrid cross shown below, what is the genotype and phenotype for the offspring represented by the letter X?

Which row in the chart above indicates the correctly matches each event with its associated cell division process?

Which cellular process is illustrated by the diagram above?

The diagram above illustrates an event called "crossing over" that commonly occurs during Meiosis I. Based on the diagram, which of the following statements best describes the important effect that this event has on the gametes produced by meiosis?

Genetic engineering has both positive and negative outcomes. One of the most common areas where genetic engineering is used is in agriculture. If farmers plant more genetically modified crops, which of the following negative outcomes could occur?

For a certain animal, black fur color is dominant over brown fur color. The pedigree below shows a cross between two individuals that have black fur. Which of the following must be true?

Hemophilia is a sex‐linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman who is a heterozygous carrier?

What can you conclude about the trait shown in the pedigree above?

Genes for medically important proteins can be cloned and inserted into bacteria, as shown in the diagram above. Why can bacteria recognize a human gene and then produce a human protein?

Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait and therefore occurs only in individuals who are homozygous recessive. Which set of parents can have a child with type O blood?

A human baby boy inherits a recessive allele from his mother. In which circumstance would he most likely show the trait coded for by the recessive allele?

The diagram above depicts a diploid cell containing two pairs of homologous chromosomes. Assume that the cell undergoes meiosis. Given the law of independent assortment, what would be the possible genotypes of the gametes that result from meiosis?

In guinea pigs, black coat color (B) is dominant over white coat color (b) and short hair (S) is dominant over long hair (s). Based upon the dihybrid cross shown below, what is the genotype and phenotype for the offspring represented by the letter X?

Which row in the chart above indicates the correctly matches each event with its associated cell division process?

Which cellular process is illustrated by the diagram above?

The diagram above illustrates an event called "crossing over" that commonly occurs during Meiosis I. Based on the diagram, which of the following statements best describes the important effect that this event has on the gametes produced by meiosis?

Genetic engineering has both positive and negative outcomes. One of the most common areas where genetic engineering is used is in agriculture. If farmers plant more genetically modified crops, which of the following negative outcomes could occur?

For a certain animal, black fur color is dominant over brown fur color. The pedigree below shows a cross between two individuals that have black fur. Which of the following must be true?