2M03 Chapter 10
67 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which term refers to the collective body of genetic information in an organism?

  • Hereditary factors
  • Chromosomes
  • DNA
  • Genome (correct)

What did Mendel establish based on his studies of pea plants?

  • The structure of DNA
  • The laws of inheritance (correct)
  • The concept of genes
  • The nature of chromosomes

What are the units of inheritance called?

  • DNA
  • Genes (correct)
  • Hereditary factors
  • Chromosomes

How many forms of a gene called alleles control each trait?

<p>Two (D)</p> Signup and view all the answers

What happens when alleles controlling a trait are nonidentical?

<p>The dominant allele masks the recessive allele (C)</p> Signup and view all the answers

How many alleles for each trait are inherited, one from each parent?

<p>Two (D)</p> Signup and view all the answers

What is the term for the separation (segregation) of pairs of genes during gamete formation?

<p>Independent assortment (B)</p> Signup and view all the answers

Which enzymes change the level of DNA supercoiling?

<p>Both Type I and Type II topoisomerases (A)</p> Signup and view all the answers

What is the rate of renaturation of DNA from bacteria and viruses dependent on?

<p>The size of their genome (A)</p> Signup and view all the answers

What percentage of total DNA do highly repeated DNA sequences represent?

<p>1-10% (C)</p> Signup and view all the answers

What are satellite DNAs?

<p>Short sequences that tend to evolve very rapidly (B)</p> Signup and view all the answers

What are SINEs and LINEs?

<p>Repeated DNA sequences that lack coding functions (C)</p> Signup and view all the answers

What type of diseases result from expansion of trinucleotide repeats?

<p>Both Type I and Type II diseases (C)</p> Signup and view all the answers

What causes polyploidization in offspring?

<p>Both hybrids from closely related parents and duplicate chromosomes not separated in embryonic cells (A)</p> Signup and view all the answers

Which of the following is true about chromosomes?

<p>Chromosomes are the carriers of genetic information. (D)</p> Signup and view all the answers

Which statement about genes on the same chromosome is correct?

<p>Genes on the same chromosome are part of the same linkage group. (C)</p> Signup and view all the answers

What did studies with Drosophila confirm?

<p>Genes reside on chromosomes. (C)</p> Signup and view all the answers

What is the significance of crossing over and recombination?

<p>The frequency of recombination indicates distance between genes. (D)</p> Signup and view all the answers

What is true about exposure to X-rays?

<p>Exposure to X-rays increases the rate of spontaneous mutations. (A)</p> Signup and view all the answers

What is the chemical structure of DNA?

<p>DNA consists of a phosphate, a sugar, and either a pyrimidine or purine nitrogenous base. (A)</p> Signup and view all the answers

What is true about the DNA molecule?

<p>The DNA molecule is held together by covalent bonds between each base. (D)</p> Signup and view all the answers

Which of the following is true about the evolution of globin genes?

<p>Ancestral forms have given rise to recent forms (A)</p> Signup and view all the answers

What are transposable elements?

<p>Genes capable of moving within a chromosome (C)</p> Signup and view all the answers

How do retrotransposons replicate their genome?

<p>By using an RNA intermediate which produces a complementary DNA via reverse transcriptase (B)</p> Signup and view all the answers

What are the possible evolutionary roles of transposable elements?

<p>All of the above (D)</p> Signup and view all the answers

How many genes are estimated to be present in the human genome?

<p>About 20,000 (C)</p> Signup and view all the answers

What is the term used for segments of the genome that can change and involve large segments of the DNA?

<p>Structural variants (A)</p> Signup and view all the answers

What is the most common type of variability among humans at the DNA level?

<p>Single nucleotide polymorphisms (C)</p> Signup and view all the answers

What is the gene FOXP2 known as?

<p>The speech gene (D)</p> Signup and view all the answers

What is the function of the gene AMY1?

<p>Enzyme amylase production (D)</p> Signup and view all the answers

Which enzyme is responsible for changing the level of DNA supercoiling?

<p>Topoisomerase (D)</p> Signup and view all the answers

What is the term used for the ability of DNA to separate into two strands?

<p>Denaturation (D)</p> Signup and view all the answers

Which class of DNA sequences represents about 1-10% of total DNA and tends to evolve rapidly?

<p>Satellite DNAs (C)</p> Signup and view all the answers

Which class of repeated DNA sequences includes genes that code for ribosomal RNA and histones?

<p>Moderately repeated DNA sequences with coding functions (C)</p> Signup and view all the answers

What is the term used for the duplication of a portion of a single chromosome?

<p>Gene duplication (A)</p> Signup and view all the answers

What type of diseases result from the expansion of trinucleotide repeats?

<p>Neurodegenerative disorders (C)</p> Signup and view all the answers

What is the term used for the process in which offspring receive more than two sets of chromosomes from their parents?

<p>Polyploidization (D)</p> Signup and view all the answers

Which of the following is true about homologous chromosomes?

<p>They are present as pairs (B)</p> Signup and view all the answers

What did Morgan use as a primary tool for genetic research?

<p>Fruit flies (C)</p> Signup and view all the answers

What is the percentage of recombination between a pair of genes?

<p>Constant (A)</p> Signup and view all the answers

What is the function of polytene chromosomes in Drosophila?

<p>To observe specific bands correlated with individual genes (D)</p> Signup and view all the answers

What is the structure of a nucleotide in DNA?

<p>Phosphate, sugar, and either a pyrimidine or purine base (A)</p> Signup and view all the answers

What did Chargaff establish about the base composition of DNA?

<p>Number of adenine = number of thymine (C)</p> Signup and view all the answers

What holds the two DNA chains together in a double helix?

<p>Hydrogen bonds (A)</p> Signup and view all the answers

Which of the following is true about transposable elements?

<p>Transposable elements are capable of moving within a chromosome (A)</p> Signup and view all the answers

What is the term used for the duplication of genes?

<p>Duplication (D)</p> Signup and view all the answers

What is the function of the gene FOXP2?

<p>It is involved in speech (A)</p> Signup and view all the answers

What is the most common type of DNA sequence variability among humans?

<p>Single nucleotide polymorphisms (SNPs) (C)</p> Signup and view all the answers

What is the term used for large changes in segments of the genome?

<p>Structural variants (B)</p> Signup and view all the answers

What is the term used for DNA sequences that resemble functional genes but are nonfunctional?

<p>Pseudogenes (B)</p> Signup and view all the answers

What is the term used for the collective body of genetic information in an organism?

<p>Genome (B)</p> Signup and view all the answers

What is true about the gene AMY1?

<p>It encodes the enzyme amylase (B)</p> Signup and view all the answers

What is the term used for the movement of transposable elements within a chromosome?

<p>Transposition (C)</p> Signup and view all the answers

What is the term used for the units of inheritance called?

<p>Genes (C)</p> Signup and view all the answers

What did Mendel establish based on his studies of pea plants?

<p>The laws of inheritance (B)</p> Signup and view all the answers

What is the term used for the duplication of genes?

<p>Duplication (A)</p> Signup and view all the answers

What is the term used for the collective body of genetic information in an organism?

<p>Genome (D)</p> Signup and view all the answers

What is the term used for segments of the genome that can change and involve large segments of the DNA?

<p>Transposable elements (C)</p> Signup and view all the answers

What is the term used for the ability of DNA to separate into two strands?

<p>Denaturation (D)</p> Signup and view all the answers

What is the term used for the movement of transposable elements within a chromosome?

<p>Transposition (B)</p> Signup and view all the answers

Which of the following is true about genes on chromosomes?

<p>Genes are located on chromosomes (A)</p> Signup and view all the answers

What is the term used for the separation (segregation) of pairs of genes during gamete formation?

<p>Segregation (C)</p> Signup and view all the answers

What did Mendel establish based on his studies of pea plants?

<p>The laws of inheritance (B)</p> Signup and view all the answers

What is the term for the collective body of genetic information in an organism?

<p>Genome (A)</p> Signup and view all the answers

What is true about exposure to X-rays?

<p>Exposure to X-rays can cause mutations in genes (A)</p> Signup and view all the answers

What is the chemical structure of DNA?

<p>Double-stranded helix (C)</p> Signup and view all the answers

What is the significance of crossing over and recombination?

<p>They create new combinations of alleles (B)</p> Signup and view all the answers

More Like This

Mendel's Laws of Inheritance Quiz
19 questions
Gregor Mendel and Genetics Quiz
26 questions
Genetics Quiz: Mendel and Alleles
25 questions
Use Quizgecko on...
Browser
Browser