Week 8 Test Answers

Which type of scientific statement is defined as a hypothesis or group of hypotheses that can be accepted as true based on repeated experimentation with similar results?

In the F2 generation of Mendel’s crosses,

Which of Mendel’s generations was allowed to self-pollinate?

Which was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II?

Gregor Mendel used pea plants that were heterozygous for each of two traits—seed color and seed shape—to generate a dihybrid cross. The phenotypic ratio of the resulting offspring was nine with round and yellow seeds, three with round and green seeds, three with wrinkled and yellow seeds, and one with wrinkled and green seeds. From these results, what could Mendel conclude?

If a person has type B blood, which statement describes the antibodies present in his or her blood?

Karyotypes can be studied to determine an organism’s chromosomal makeup and to detect genetic defects. Down syndrome is a genetic disorder that is also called trisomy 21. What would trisomy 21 look like in a karyotype?

All of the following would be visible on a karyotype except

Mary has type A blood. Her son Bill has type AB blood. Which blood type does Bill's dad have if he is homogenous for blood type?

Which Punnett square represents a cross between two parents that are heterozygous for purple flowers?

In a dihybrid cross for round and yellow seeds (RrYy x RrYy), what is the probability of having green and wrinkled seeds?Key: R = round r = wrinkled Y = yellow y = green

Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma?

Which best describes a centromere?

A scientist is studying fruit fly wings. Straight wings are dominant, and curly wings are recessive. Which statement correctly describes the F1 generation if a straight-winged parent is crossed with a curly-winged parent and if both parents are true breeding?

A pea plant exhibits a recessive trait. Which statement is most likely true about the plant?

Which is a purpose for which a pedigree chart might be prepared?

Which statement about sister chromatids is true?

The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits.In which squares should the phrase “Green pods” appear?

Justin is looking at two chromosomes that have identical alleles for a particular trait. What term best describes these chromosomes?

Which term describes the chromosomal abnormality of having three copies of a single chromosome?