Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white offspring in this case would be

In pole beans, green pods (G) are a dominant trait, while yellow pods (g) are a recessive trait. A bean plant with a GG genotype is crossed with a second plant that has the gg genotype. If this cross produces 500 offspring, approximately how many of the offspring will have green pods?

White coat (W) is dominant over tan (w) coat in foxes. When a white-coated male is mated with a tan-coated female, 100% of their offspring are white-coated. What is the genotype of the female fox?

The Punnett square shown presents a cross between two piranha. Both parents have large teeth.

According to the chart, which combination describes the offspring expected from the cross?

Two genetically identical plants were crossed. The genotypic ratios of offspring are seen in the Punnett square.

What percent of the offspring should look like the parents?

The Punnett square above shows a cross between two sweet pea plants in Mendel's greenhouse. Both parents have blue flowers (Bb).

Which statement describes the offspring expected from this cross?

A female cat has two recessive genes for long fur (ss) and a male cat has two dominant genes for short fur (SS). What is the likelihood the two cats produce a kitten with short fur?

Among a species of butterflies, the color blue (B) is a dominant trait. Yellow color (b) is a recessive trait. If a pure blue butterfly (BB) mates with a pure yellow (bb), what will the offspring look like?

A trait is a feature or quality of an organism. All organisms have a unique set of traits that they inherit from their parents. Each parent supplies one half of the __________ needed to determine the traits of their offspring.

A portion of this DNA, known as a ________, is responsible for the inheritance of a trait, like eye color or blood type in humans.

In rabbits, B represents the allele for black coat and b represents the allele for white coat. Black is dominant over white. If a rabbit has the genotype Bb, what is the rabbit's phenotype?

In pea plants, wrinkled seeds (W) is the dominant trait, while smooth seeds (w) is the recessive trait. Consider the cross Ww X WW.

What will be the ratio of wrinkled to smooth seeds?

Our traits are determined by our genes and these traits are inherited. Where do our genes come from?

Amy’s white cat had kittens. The father of the kittens was MOST LIKELY

Brown rabbits have the genotype BB or Bb. White rabbits have the genotype bb. If two brown rabbits, with the genotypes seen in the Punnett square above, have baby rabbits, what is the probability that the baby rabbits will also be brown?

A black dog has the genotype of BB for fur color. The black dog mates and has puppies with a solid white dog. The white dog has the genotype bb. What is the probability that this match will produce puppies that are also white?

Evaluate each of the statements below. Select those that accurately describe the role of genes and chromosomes in the process of inheriting a specific trait. Choose ALL that apply.

Label A represents:

Label B represents:

Label C represents:

Label D represents:

Label E represents:

The image shows the cross between two parents who are carriers for sickle cell anemia, a recessive genetic disorder that affects the red blood cells in humans. Both parents are considered to be _______________.

The image shows the cross between two parents who are carriers for sickle cell anemia, a recessive genetic disorder that affects the red blood cells in humans. The probability that these parents will have an offspring affected with sickle cell anemia is ____

percent. The probability that their offspring would also be a carrier like them is ____ percent.

Zebra mussels are originally native to Russia. In the mid-1980's, zebra mussels were introduced into the Great Lakes region of the United States where they rapidly reproduced. Females can produce up to one million eggs per year. In one zebra mussel population, most of the individuals have dark, zebra-striped shells (genotype AA). However, solid light-colored shells (genotype aa) occur in 1 of every 10,000 individuals. The solid light-colored shells indicate mussels that are not hardy in cold water temperatures.

If you cross a mussel with dark, zebra-striped shells with a mussel with solid light-colored shells, how many offspring would you expect to have the dark, zebra-striped shells?

Zebra mussels are originally native to Russia. In the mid-1980's, zebra mussels were introduced into the Great Lakes region of the United States where they rapidly reproduced. Females can produce up to one million eggs per year. In one zebra mussel population, most of the individuals have dark, zebra-striped shells (genotype AA). However, solid light-colored shells (genotype aa) occur in 1 of every 10,000 individuals. The solid light-colored shells indicate mussels that are not hardy in cold water temperatures.

Which cross would produce the greatest genetic diversity among the offspring?

In the diagram shown, ___________ are represented by the squares.

In the diagram, the shaded squares represent

In the image, the squares represent males, the circles females. The darkened shapes represent those who are affected. The diagonal line represents deceased subjects.

In the diagram, the undarkened circles represent:

Examine the given image. Which list best identifies the parts of the diagram?

Which section of the shown figure carries the code for a particular trait in an organism?

Which of the following statements best describe the relationship of genes to chromosomes?

A gardener grew a sweet pea plant that produces purple flowers. She found that the seeds of this plant, when grown, produced some plants with white flowers and some with purple flowers. What can be a reason for the production of plants with white flowers?

A female fish releases its eggs in water. These eggs are fertilized by the sperm released by a male fish in the water. The fertilized eggs grow and develop into young fish. Which statements are true for the reproduction process described?

A group of students is discussing mitosis and meiosis and this is what they said:

Student A said meiosis produces cells that are diverse while mitosis produces cells that are identical. Student B said during meiosis, the chromosome number remains the same, but during mitosis, the chromosome number reduces by half. Student C said meiosis is an asexual reproductive process, but mitosis is a sexual reproductive process. Student D said new cells are formed during meiosis, but not mitosis.

Which student has the more accurate comparison of mitosis and meiosis?

Some people have an uncontrollable need to sneeze when they go out into bright sunlight. You might see these people sneezing when they walk out of a movie theater or a school on a sunny day. The condition even has a name—it is called ACHOO syndrome. ACHOO syndrome is a genetic condition and the ACHOO allele is dominant.

Look at the pedigree for the Kowalski family. Arek and Marietta both have ACHOO syndrome. They have four married children. Some of the children have ACHOO and others do not. Which of the couples is certain to have no children with ACHOO syndrome?

In humans, having brown hair is dominant to having blond hair. Which of the following best explains how it is possible that two brown-haired parents could have a blond-haired child?

A farmer decides to cross two heterozygous tall pea plants (Tt). What percent of the offspring will be short?

A scientist has just finished an experiment that produced new evidence showing how DNA works. She wants to ensure that the evidence is accepted by other scientists.

Which action will prevent the evidence from being accepted?

There have been several ideas over time about how plants and animals receive traits. Lamarck thought that living things could change their traits based on the environment. Gregor Mendel noticed that plants had the basic traits of their parents regardless of the environment. Mendel's experiments added to the knowledge of heredity by verifying that specific traits are contributed from each parent and are inherited in each generation.

Which of these statements best explains how Mendel’s laws of heredity were confirmed by the scientific community?

Gregor Mendel was an Austrian monk who did thousands of experiments with pea plants. He tested many different traits (height, size, pod color, pod texture) and conducted many trials for each experiment. As a result of his studies, he presented knowledge about genetics, traits, and inheritance that is still used today as the foundation of modern genetic theory.

How did Mendel’s experiments exhibit the use of scientific thinking?