Ch 24 online quiz

It's due at 5 pm on Fri the 22nd!!! Very helpful! Thanks Crystal Light!

Do the For Investigation question, too! Remember we can post answers here and help each other out! There's a for investigation page. This question is evil.

Here are some of the answers to the online questions. I'm not saying theses are all right. I'm looking them up, so can you!
Warning some of these are not correct!!!
Most are correct as well!!
(Incorrect answers are maked with~)

~*Nonsynonymous mutations in a gene coding for a protein result in the replacement of an amino acid in the protein, may be neutral, may be deleterious, and may be beneficial. ~
Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? pp. 530–531
*A eukaryotic organism's genome is all of the genes as well as noncoding regions of DNA.
Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? p. 525
*In vitro evolution is the synthesis of macromolecules with particular properties based on principles of molecular evolution.
Textbook Reference: 24.3 What Are Some Applications of Molecular Evolution? pp. 538–539
*The comparison of the amino acid sequences of cytochrome c from plants to human showed that gaps and/or insertions were required in some cases to optimize the alignment.
Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? pp. 528–529
*Mistakes in the replication of DNA provide genetic variation.
Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? p. 525
*Genes found in different species that diverge as a result of speciation are called orthologs, whereas genes in the same or different organism that arise by gene duplication are called paralogs.
Textbook Reference: 24.3 What Are Some Applications of Molecular Evolution? p. 537
*Refer to the following figure. Which of the following statements about this Figure is false?
Answer:Sea urchin En and lamprey En are paralogs.

Textbook Reference: 24.3 What Are Some Applications of Molecular Evolution? p. 537
~*Refer to the table below to answer this question. Which of the following nucleotide substitutions in a codon in a gene that codes for a protein would likely have the most harmful affect on the activity of the protein?
Answer: GGA → GGG

Updated and now correct answer is: GGA - UGA
Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? p. 531
*A mutation in a gene in which an A is changed to a G is called a transition whereas a mutation of A to T is called a transversion. The former type of mutation occurs at a higher frequency than the latter.
Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? p. 527
*In the amino acid sequences shown in the figure below, positions _ are conserved and position _ show the most variation in amino acid identity. The amino acids are labeled sequentially from left to right.
Answer: 1, 4, and 7; 5

Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? pp. 526–527
*Gene families are groups of homologous genes that arose by gene duplication and mutation.
Textbook Reference: 24. 2 What Are the Mechanisms of Molecular Evolution? p. 535
*Synonymous mutations of a gene are favored when there is strong stabilizing selection and are neutral with respect to the fitness of an organism.
Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? p. 532
*Ribosomal RNA genes undergo concerted evolution.
Textbook Reference: 24.3 What Are Some Applications of Molecular Evolution? p. 536
*Gene duplication can occur by duplication of an entire diploid genome, result in the formation of pseudogenes,result in genes that are lost from the genome, lead to the evolution of genes that code for proteins with new functions.
Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? pp. 534–535
*Which of the following statements about the genomes of organisms is false?
Answer:The total size of the genome of eukaryotes varies little from organism to organism.

Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? pp. 533–534
*The alignment of the amino acid sequences of a protein from different species may be complicated by the presence of insertions in some of the proteins, and can be used to calculate evolutionary divergence.
Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? pp. 526–527
*Which of the following statements about synonymous mutations is true?
Answer: They can occur because of the redundancy of the genetic code.

Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? p. 530
*Comparisons of the genes that code for lysozyme and the amino acid sequence of the enzyme from a number of organisms revealed that the number of changes in lysozyme uniquely shared by cattle, langur, and the hoatzin was high. **
Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? pp. 532–533
*The experiments of Rainey and Travisano with Psuedomonas fluorescens showed that certain mutations may be beneficial to the bacterium under one condition, but harmful under another.
Textbook Reference: 24.1 What Can Genomes Reveal about Evolution? pp. 528–530
*A neutral mutation is fixed in a population at a rate equal to the mutation rate.**
Textbook Reference: 24.2 What Are the Mechanisms of Molecular Evolution? p. 531

Another Question on the Quiz:
Q: The experiments of Rainey and Travisano with Psuedomonas flourescens showed that…
A: Certain mutations may be beneficial to the bacterium under one condition but harmful under another.
Textbook Reference: 24.1 Pg. 528-530

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License