Questions And Answers Verified 100% Correct
Chapter 1 Introduction to Genetics
1) What is the name of the company or institution that has access to the health, genealogical, and
genetic information of approximately 270,000 residents of Iceland?
1. A) National Institutes of Health
2. B) deCODE
3. C) Gattaca
4. D) Biogen
5. E) American Cancer Society
2) A biotechnology company, deCODE, is in the process of creating a database that contains
.
1. A) the gene sequences of all newborns in the United States beginning in 2006
2. B) a compilation of all the known genes in humans throughout the free world
3. C) health, genealogical, and genetic information of approximately 270,000 residents of
Iceland
, 4. D) a complete sequence of the human genome
5. E) all the information available on the human genome project
3) Why did deCODE select Iceland for its ambitious research project?
1. A) a relatively low degree of genetic diversity
2. B) frequent and extensive mutational bursts
3. C) high genetic diversity
4. D) lack of genealogical information
5. E) virtual absence of mutation
4) Many species have two representatives of each chromosome. In such species, the characteristic
number of chromosomes is called the number. It is usually symbolized as .
1. A) haploid; n
2. B) haploid; 2n
3. C) diploid; 2n
4. D) diploid; n
5. E) None of the answers listed is correct.
5) Genetics is the study of .
1. A) heredity and variation
2. B) mutation and recession
3. C) transcription and translation
4. D) diploid and haploid
5. E) replication and recombination
6) The genetic material DNA consists of basic subunits called .
1. A) mitochondria
, 2. B) lysosomes
3. C) centrioles
4. D) nucleotides
5. E) None of the answers listed is correct.
7) The immediate product of transcription is .
1. A) a phospholipid
2. B) an amino acid
3. C) a protein
4. D) a carbohydrate
5. E) RNA
8) Genetics is commonly grouped into several general areas: transmission, molecular, and
population/evolution. Which biological processes are studied in transmission genetics?
Answer: Mendelian inheritance (segregation and independent assortment), modification of
Mendelian patterns.
Section: Introduction
9) Which theory postulates that an organism is derived from materials originally present in the egg
that eventually differentiate into adult structures during development?
10) What is meant by the term gene?
11) What term refers to the similarity between parents and offspring, and what term refers to the lack
of similarity between parents and offspring?
12) Early in the twentieth century, Walter Sutton and Theodor Boveri noted that the behavior of
chromosomes during meiosis is identical to the behavior of genes during gamete formation. They
proposed that genes are carried on chromosomes, which led to the basis of the .
, 13) What is a mutation?
14) What is a simple definition of an allele?
15) Until the mid-1940s, many scientists considered proteins to be the likely candidates for the
genetic material. Why?
16) Name the individual who, while working with the garden pea in the mid-1850s, demonstrated
quantitative patterns of heredity and developed a theory involving the behavior of hereditary factors.
17) What does the term genetics mean?
18) Name the substance that serves as the hereditary material in eukaryotes and prokaryotes.
19) Name two individuals who provided the conceptual basis for our present understanding that
genes are on chromosomes.
20) What term is used to describe the fact that different genes in an organism often provide
differences in observable features?
21) Name one of the botanists who, in 1900, rediscovered the work of Gregor Mendel.
22) Alternative forms of a gene are called .
23) The various characteristics of organisms that result from their genetic makeup are collectively
referred to as an organism’s .
24) A fundamental property of DNA’s nitrogenous bases that is necessary for the double-stranded
nature of its structure is .