FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 9: Patterns of Inheritance

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

Mendel's law of segregation indicates that

A) two alleles segregate into each gamete.
B) more gametes carrying the dominant allele are produced than gametes carrying the recessive allele.
C) gametes have one allele copy for each gene.
D) gametes are diploid.

E) A) and B)
F) A) and C)

Correct Answer

verified

C

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

Scientists have long been interested in differences between dogs and wolves in their social behavior toward humans. Dogs and wolves share a common ancestor. In trying to understand the differences, a researcher analyzed data collected from 18 domesticated dogs and 10 wolves that had been raised by humans. Which data would be most useful to understand the genetic basis of this behavior?

A) The pedigree for the dogs and the geographic location from which the wolves came.
B) The number of chromosomes in wolves and dogs.
C) Differences in DNA sequences between the dogs and the wolves.
D) Examination of DNA from the ancient ancestor of dogs and wolves.

E) All of the above
F) A) and B)

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

A purebred plant that produces yellow seeds is crossed with a purebred plant that produces green seeds. The F₁ plants have yellow seeds. What is the expected phenotypic ratio of seed color of the offspring of an F₁ × F₁ cross?

Which outcome could help you identify a trait whose expression is determined by the effects of two or more genes (polygenic inheritance) ?

An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. What is the relationship between the alleles for hair texture?

A purebred plant that produces yellow seeds is crossed with a purebred plant that produces green seeds. The seeds of all of the offspring are yellow. Why?

An individual who is heterozygous for cystic fibrosis ________.

In humans, free earlobes (E) are dominant to attached earlobes (e) and the presence of freckles (F) is dominant to the absence of freckles (f) . If an individual heterozygous for both of these traits were to mate with an individual with attached earlobes and no freckles, what is the probability of having a child with attached earlobes and freckles?

Attached earlobes are recessive to free earlobes. What is the probability of having a child with attached earlobes when an individual with attached earlobes mates with an individual heterozygous for free earlobes?

Assume that having three nostrils is inherited as a sex-linked trait on the Y chromosome. A man with three nostrils has a daughter who has a son with a man who has only two nostrils. What is the probability that the three-nostril man's grandson has three nostrils?

Scientists have long been interested in differences between dogs and wolves in their social behavior toward humans. Dogs and wolves share a common ancestor. In trying to understand the differences, a researcher analyzed data collected from 18 domesticated dogs and 10 wolves that had been raised by humans. If she discovered that the degree of social relationship a dog exhibited toward humans was positively correlated with a chemical modification of a part of a chromosome rather than what alleles a dog had, this would be an example of ________.

A couple has two female children. What is the probability that their next child will be male?

To determine the phenotype of an individual who expresses a dominant trait, you would cross that individual with an individual who ________.

Many human traits, such as our performance on intelligence tests or our susceptibility to heart disease, are ________.

Widow's peak, a pointed hairline on the forehead, is a genetic trait caused by a dominant allele. It can be traced back through a family's history using pedigree analysis. The pedigree shown here is of three generations of a family. Notice that some individuals (shown in gray) have a widow's peak (W = dominant allele and w = recessive allele) . -Mary has the genotype ________.

Hypophosphatemia (vitamin D-resistant rickets) is inherited as a sex-linked dominant trait. The relevant gene is found on the X chromosome. What is the expected outcome of a cross between a homozygous recessive woman and a man with hypophosphatemia?

To determine the phenotype of an individual who expresses a dominant trait, you would cross that individual with an individual who is homozygous recessive for that trait. This technique is referred to as a(n) ________.

Please refer to the following art to answer the following questions. -In the accompanying art, you see a table with the actual number of offspring that resulted from a dihybrid cross. The numbers do not show the 9:3:3:1 ratio predicted. One phenotype occurred more than predicted; another occurred less. The reason could be because ________.

What would you examine to determine whether a trait is sex linked?

Mendel's laws are based on the behavior of chromosomes during ________.