Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 16, Problem 2FIB
Different versions of the same gene are called ______. These versions arise as a result of changes in the sequence of ______ that form the gene. These changes are known as ______. An Individual with two identical copies of a given gene is described as being ______ for that gene, while an individual with two different versions of that gene is described as ______.
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Use the following words to complete this statement: phenotype, genotype, heterozygous, homozygous, traits, alleles, genes
Chromosomes contain _______, which help to determine an organisms _____. Genes come in alternate forms called _____, and both parents may not have the same type of allele. The actual gene combination that an organisms receives from its parents is called its_____, while the trait that gets expressed as a result is referred to as its _____. If an offspring receives the same type of allele for a given gene from each parent, it is said to be _____for that trait. If the alleles differ, it is _____.
Which term indicates that a single gene has two or more alleles present in a population? A. Point mutation B. Genotype C. Polymorphism D. Pleiotropy
Which of the following does not support the idea of descent with modification?
A.
Organisms and the cells that they are composed of arise from DNA
B.
When organisms reproduce they generate new copies of DNA to pass down to their offspring
C.
We inherit traits from our ancestors because in possess molecules of their DNA that you received from your parents
D.
In the process of DNA replication, mutations occur with the goal of increasing an organism's fitness
Chapter 16 Solutions
Biology
Ch. 16.1 - define evolution in terms of concepts from...Ch. 16.1 - define equilibrium population and describe the...Ch. 16.2 - If it were true that mutations do occur in...Ch. 16.2 - Explain how the distribution of genotypes in...Ch. 16.2 - A flu vaccination stimulates your immune system to...Ch. 16.2 - Prob. 3TCCh. 16.2 - If a population grows large again after a...Ch. 16.2 - Prob. 5TCCh. 16.2 - Evolution of a Menace The mutant alleles that...Ch. 16.2 - describe how mutation, gene flow, genetic drift,...
Ch. 16.3 - A team of phys clans treated four patients with...Ch. 16.3 - If we studied a population of bighorn sheep and...Ch. 16.3 - When selection is directional, is there any limit...Ch. 16.3 - describe why selection of phenotypes can affect...Ch. 16.3 - explain how competition and predation influence...Ch. 16.3 - Prob. 3CYLCh. 16.3 - compare and contrast directional selection,...Ch. 16.3 - Microbiologists have discovered that alleles...Ch. 16 - The alleles responsible for antibiotic resistance...Ch. 16 - Stabilizing selection on a trait tends to a. make...Ch. 16 - An adaptation is a. any trait that arises from a...Ch. 16 - Which of the following statements about mutations...Ch. 16 - Genetic drift occurs a. when different phenotypes...Ch. 16 - The ______ provides a simple mathematical model...Ch. 16 - Different versions of the same gene are called...Ch. 16 - An organisms ______ refers to the specific alleles...Ch. 16 - A random form of evolution is called ________....Ch. 16 - Competition is most Intense between members of...Ch. 16 - The evolutionary fitness of an organism is...Ch. 16 - What is a gene pool? How would you determine the...Ch. 16 - Define equilibrium population. Outline the...Ch. 16 - How does population size affect the likelihood of...Ch. 16 - If you measured the allele frequencies of a gene...Ch. 16 - People like to say that you cant prove a negative....Ch. 16 - Describe the three ways in which natural selection...Ch. 16 - What is sexual selection? How is sexual selection...Ch. 16 - In North America, the average height of adult...Ch. 16 - By the 1940s, the whooping crane population had...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following individuals would be considered to have the greatest evolutionary fitness? a. Olympic speed skater with one child b. an overweight person with three children c. a woman who had six children, none of whom (the children) survived to adulthood d. a single mom who adopted eight childrenarrow_forwardIf our DNA contains all the information about who we are, how can something that does not involve changing the gene sequence cause changes in phenotypes? Describe briefly how these changes happen in an essay with examplesarrow_forwardDescribe five different scenarios where a change in DNA sequence would result in a phenotypic change at the organismal (human) level.arrow_forward
- Genetic variation in organism is due to?arrow_forwardtrue or false:  mutations add to genetic variation by producing new alleles.arrow_forwardPlease answer fast Which statement about genetic mutations is true? A. Most mutations do not cause changes to an organism’s fitness but will always affect the carrier individual’s physical traits. B. Many genetic mutations are neutral, and do not affect fitness. C. Mutations always create individuals with unique phenotypes, which are either desirable or undesirable in their environment. D. All mutations are fatal to the carrier organism.arrow_forward
- Some mutations, or changes in the sequence of DNA, do not have any effect on the characteristics of the organism.Why is this?arrow_forwardIn a population, there are two different alleles for a gene. D is dominant and d is recessive. If two organisms that are Dd mate, which of the following lists the results possible offspring?1.Dd and dd2.DD, Dd, and dd3.All Dd4.DD and ddarrow_forwardGenotype, Phenotype, Traits, Allele, Heredity, Dominant, Recessive, Homozygous, Heterozygous, Natural Selection, Polyp, Medusa, Cnidocytes, Ctenophore, Radial Symmetry, Diploblastic, epidermis, endodermis, Cilia, Mesoderm, Chemotaxis Collection of cells on the outside of an organism. Collection of cell lining the inside of an organism. The gene makeup of an organism.arrow_forward
- Which of the following statements describe how genes, proteins, and traits are related? Select all that apply. Proteins carry out activities in the cell that affect traits. Genes carry out functions in the cell that include providing structure and controlling chemical reactions. Genes contain information about traits. The nucleotide sequence of a gene determines the amino acid sequence of a protein. Proteins are molecules in the cell that encode genes. Submitarrow_forwardWhat is the difference between a gene and an allele? a. A gene is a form of a trait, and alleles make up genes. b. A gene is a sequence of bases in a DNA molecule, and an allele is an alternative version of a gene that codes for the same feature. c. A gene is a sequence of bases in a DNA molecule, and an allele is an alternative version of a gene that codes for a different, but related, feature. d. A gene describes a chromosome, and an allele describes an exact location of a gene on a chromosome. e. An allele and a gene are the same thing.arrow_forwardThe change in the circled offspring’s genotype was caused by a mutation. A mutation is a change in a gene. Mutations happen when a mistake is made when a cell’s chromosomes are copied. How might mutations introduce variation into a population?arrow_forward
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