Exam 9: Patterns of Inheritance

Which of the following statements regarding prenatal testing is false?

After reading the paragraphs below, answer the questions that follow. During a summer study abroad program, you travelled to Austria to study genetics at the University of Vienna. While you were there, a momentous discovery was made: some of Gregor Mendel's original lab books and notes were found to be buried outside of the abbey where he lived. It just so happened that the professor you were working with obtained copies of these notes and enlisted your help to decipher them. You hired a translator to translate Mendel's notes from Czech to English, and using your knowledge of modern genetics (which Mendel did not have!) you were able to construct a partial Punnett square (shown below). Because the notebook was damaged from being buried for so long, this is the only information that you have regarding a cross that Mendel must have performed. Your professor has tasked you with figuring out more about this experiment. -In pea plants, round peas are dominant (R)and shriveled peas are recessive (r), and yellow peas (shown as light gray in Punnett square)are dominant (Y)and green peas (dark gray)are recessive (y). Using this information and the partial Punnett square above, what is the phenotypic ratio of the offspring pea plants in this Punnett square?

What is meant by the statement that "male bees are fatherless"?

The alleles of a gene are found at ________ chromosomes.

Which of the following statements regarding sickle-cell disease is false?

After reading the paragraphs below, answer the questions that follow. Cats normally have a total of 18 toes, 5 on each front paw and 4 on each back paw. But some cats express the dominant phenotype for polydactyly, which results in the development of extra toes on one or more paws. Jake, a Canadian tabby cat, has 28 toes and is recognized by the Guinness Book of World Records as the cat with the most toes. -Along with having a variable number of toes, some kittens from Jake and Lucy's litter had a white spot on their nose. In fact, out of the 16 kittens, all 10 males had the white spot, but none of the 6 females had the white spot. Jake has a white spot on his nose, but Lucy does not. What can you conclude from this information?

Research since Mendel's time has established that the law of segregation of genes during gamete formation

The chromosome theory of inheritance states that

Sex-linked conditions are more common in men than in women because

The mechanism that "breaks" the linkage between linked genes is

Any gene located on a sex chromosome

Which plants in this figure must all be heterozygous?

You are trying to determine the linkage map of a series of genes, X, Y, and Z, from Caenorhabditis elegans, a nematode worm commonly used in scientific research. From doing several crossover experiments, you know that the recombination frequency between X and Y is 11.5%, between Y and Z is 13%, and between X and Z is 25%. What is a possible sequence of these genes?

Genes located close together on the same chromosomes are referred to as ________ genes and generally ________.

In some cats, black coat color (B)is dominant over brown (B)and a striped fur pattern (S)is dominant over a marbled fur pattern (s). You rescued a black striped cat from an animal shelter but could not determine its exact genotype. To do so, you mated the cat with a brown marbled cat. The mating produced 3 brown marbled, 2 brown striped, 2 black marbled, and 3 black striped. Immediately, you concluded the genotype of your rescued cat was

You prepare a karyotype from a cell from an unknown organism. Upon analysis, you find 22 pairs of chromosomes that are each of equal length, and also a single pair that has one chromosome longer than the other. What can you conclude from this information?

Which of the following statements best represents the theory of pangenesis developed by Hippocrates?

Which of the following statements regarding cross-breeding and hybridization is false?

After reading the paragraphs below, answer the questions that follow. During a summer study abroad program, you travelled to Austria to study genetics at the University of Vienna. While you were there, a momentous discovery was made: some of Gregor Mendel's original lab books and notes were found to be buried outside of the abbey where he lived. It just so happened that the professor you were working with obtained copies of these notes and enlisted your help to decipher them. You hired a translator to translate Mendel's notes from Czech to English, and using your knowledge of modern genetics (which Mendel did not have!) you were able to construct a partial Punnett square (shown below). Because the notebook was damaged from being buried for so long, this is the only information that you have regarding a cross that Mendel must have performed. Your professor has tasked you with figuring out more about this experiment. -In pea plants, round peas are dominant (R)and shriveled peas are recessive (r), and yellow peas (shown as light gray in Punnett square)are dominant (Y)and green peas (dark gray)are recessive (y). Using this information and the partial Punnett square above, what genotype should be listed in the square labeled A?

If independent assortment did not occur, which of the following would be true?