/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 21 Which of the following situation... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 12: Problem 21

Which of the following situations does not follow the Law of Independent Assortment? a. A blond man and a brunette woman produce three offspring over time, all of who have blond hair. b. A white cow crossed with a brown bull produces roan cattle. c. Mating a hog with a sow produces six female piglets. d. Men are more likely to experience hemophilia than women.

Short Answer

Expert verified
d. Men are more likely to experience hemophilia than women.

Step by step solution

01

- Understanding the Law of Independent Assortment

The Law of Independent Assortment states that the alleles for different genes segregate, or assort, independently of each other during the formation of gametes in meiosis.
02

- Analyzing Option A

Option A describes a blond man and a brunette woman producing three blond offspring. Hair color is generally controlled by multiple genes, and without more information, we cannot determine if this situation involves interaction between alleles of different genes.
03

- Analyzing Option B

Option B describes a white cow and a brown bull producing roan cattle. Roan patterning is typically a result of codominant alleles where both colors are visible. This does not necessarily violate the Law of Independent Assortment.
04

- Analyzing Option C

Option C describes mating of a hog with a sow producing six female piglets. Piglet gender is determined by the sex chromosomes, which assort independently during meiosis, so this situation follows the law.
05

- Analyzing Option D

Option D states that men are more likely to experience hemophilia than women. Hemophilia is a sex-linked trait, specifically linked to the X chromosome. Since men have only one X chromosome, they are more likely to express recessive traits like hemophilia. This does not follow the Law of Independent Assortment since it involves linked genes on the sex chromosome.
06

- Conclusion

From the analysis, Option D involves sex-linked genes which do not assort independently, making it the situation that does not follow the Law of Independent Assortment.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

genetic inheritance
Genetic inheritance is the process by which genetic information is passed on from parents to their offspring. This is dictated by the alleles the parents carry and how they combine during reproduction. For example, traits such as hair color, eye color, and even susceptibility to certain diseases can be inherited.
  • Dominant alleles: These are alleles that express their trait even if only one copy is present (e.g., brown eyes).
  • Recessive alleles: These alleles only express their trait if two copies are present (e.g., blue eyes).
During reproduction, alleles from each parent combine to form the genome of the offspring. This combination and expression determine the inherited traits.
sex-linked traits
Sex-linked traits are associated with genes located on the sex chromosomes (X and Y). These traits differ based on whether the inheritance occurs on the X or Y chromosome. Most sex-linked traits are X-linked due to the larger size of the X chromosome compared to the Y chromosome.
Important Points:
  • Men (XY) only have one X chromosome, so they are more likely to express recessive X-linked traits, like hemophilia.
  • Women (XX) have two X chromosomes, so they can be carriers of X-linked traits without expressing them.
  • Y-linked traits appear only in males, and fathers pass them directly to their sons.
Understanding sex-linked traits is crucial in studying genetic disorders and how they are passed through generations.
Mendelian genetics
Mendelian genetics is named after Gregor Mendel, who discovered the basic principles of genetic inheritance in the 19th century. His work laid the foundation for understanding how traits are passed from parents to offspring.
Mendel's Laws:
  • Law of Segregation: Each organism carries two alleles for each trait, which segregate during gamete formation.
  • Law of Independent Assortment: The alleles of different genes assort independently during gamete formation, meaning the inheritance of one trait generally does not affect the inheritance of another.
Mendel's experiments with pea plants allowed him to deduce these laws, observing traits like flower color, seed shape, and height.
meiosis
Meiosis is a specialized type of cell division that reduces the chromosome number by half, producing four genetically unique gametes (sperm or egg cells in animals). This process is vital for sexual reproduction and genetic diversity.
Stages of Meiosis:
  • Meiosis I: Homologous chromosomes (one from each parent) replicate, pair up, and then separate into two new cells, reducing the chromosome number by half.
  • Meiosis II: The two new cells created then undergo a second division, where sister chromatids split, resulting in four unique haploid cells.
During meiosis, genetic variation arises from processes like crossing over (exchange of genetic material between homologous chromosomes) and the random assortment of chromosomes, both of which contribute to the genetic uniqueness of each gamete.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Mendel performed hybridizations by transferring pollen from the _____________ of the male plant to the female ova. a. anther b. pistil c. stigma d. seed

In a mating between two individuals that are heterozygous for a recessive lethal allele that is expressed in utero, what genotypic ratio (homozygous dominant:heterozygous:homozygous recessive) would you expect to observe in the offspring? a. 1: 2: 1 b. 3: 1: 1 c. 1: 2: 0 d. 0: 2: 1

Labrador retriever's fur color is controlled by two alleles, E and B. Any dog with the ee__ genotype develops into a yellow lab, while B_E_ dogs become black labs and bbE_ dogs become chocolate labs. This is an example of _____. a. epistasis b. codominance c. incomplete dominance d. linkage

In pea plants, round peas \((R)\) are dominant to wrinkled peas \((r)\). You do a test cross between a pea plant with wrinkled peas (genotype \(r r)\) and a plant of unknown genotype that has round peas. You end up with three plants, all which have round peas. From this data, can you tell if the round pea parent plant is homozygous dominant or heterozygous? If the round pea parent plant is heterozygous, what is the probability that a random sample of 3 progeny peas will all be round?

How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when the traits behave in a dominant and recessive pattern? How many phenotypes? a. 64 genotypes; 16 phenotypes b. 16 genotypes; 64 phenotypes c. 8 genotypes; 27 phenotypes d. 27 genotypes; 8 phenotypes
See all solutions

Recommended explanations on Biology Textbooks

Biology Experiments

Read Explanation

Heredity

Read Explanation

Biological Structures

Read Explanation

Chemistry of Life

Read Explanation

Responding to Change

Read Explanation

Plant Biology

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.