21. Single nucleotide polymorphisms (SNPS) mutations are rarely fatal. Which of the following is not an explanation of this fact? a. only about 2 % of the human genome codes for proteins b. many genes are not expressed in most cells c. there are two copies of a gene present d. most SNPS do not code for an extremely important part of a protein e. all of the preceding are satisfactory explanations as to why SNPS are rarely fatal.

21. Single nucleotide polymorphisms (SNPS) mutations are rarely fatal. Which of the following is not an explanation of this fact? a. only about 2 % of the human genome codes for proteins b. many genes are not expressed in most cells c. there are two copies of a gene present d. most SNPS do not code for an extremely important part of a protein e. all of the preceding are satisfactory explanations as to why SNPS are rarely fatal.

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Description: 21. Single nucleotide polymorphisms (SNPS) mutations are rarely fatal. Which of the following is not anexplanation of this fact? a. only about 2 % of the human genome codes for proteins b. many genes arenot expressed in most cells c. there are two c

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter19: Genomes And Proteomes

Section: Chapter Questions

Problem 2TYK: How do pseudogenes differ from genes? a. They are not transcribed. b. They contain longer open...

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5. While exploring the human genome, a geneticist happens upon a gene in humans that is not functional and is not currently being expressed. This gene appears to be similar to the genes found in modern monkeys that cause tail formation. The most likely explanation for this gene in humans is Group of answer choices a. The gene is lying in wait for when it will be needed and then activated when the opportunity arises b. The gene is a conserved gene that serves an essential function in modern humans c. Humans are likely evolving a tail, and the gene will be expressed in the future d. The gene Is a random mutation of no significance e. The gene is a pseudogene leftover from when human ancestors had a tail
7. Why recombinant DNA is very useful in improving our health conditions?A. Human insulin can be reproduced by bacteria?B. Vaccine can be reproduced by fungi or bacteriaC. Human growth hormone can be obtained from E. ColiD. All of the above 8. Which of the following is/are example of genetic engineering?A. A farmer choose a breed of cow for greater milk production.B. The use of bacteria in order to produce human insulinC. The insertion of clone genes to plant cellsD. Cross pollination of squash flowers. 9. Bacterial cells as host organisms may expose the gene to make protein products such as insulin and growth hormone . Which of the following processes are involved?A. replication and transcription. B. Transcription and replication C. Transcription and transformation. D. Replication and transformation
4. It is known that RNA is a nucleic acid responsible for the synthesis of proteins. However, there is another nucleic acid alongside RNA: DNA. What role does the latter play in relation to RNA? a) RNA is synthesized in the cell in case too large a mutation damages the DNA. b) DNA has the reproductive genetic code of all cells and passes it on to RNA. c) DNA directs the synthesis of enzymes, while RNA synthesizes proteins. d) DNA synthesizes RNA according to a blueprint that includes the guidelines necessary for the structure of proteins.
9)A scientist compares the sequence of a disease gene and a healthy gene and finds that these two genes are identical except for one G in place of a T at position 256 in the gene. This type of mutation is a(n): Select one: a. deletion b. insertion c. silent mutation d. frameshift e. substitution mutation
1. An alternative form of a gene is called an
In a population of self-replicating RNA molecules, natural selection would favor those molecules that: a. have longer nucleotide sequences. b. have shorter nucleotide sequences. c. replicate more rapidly. d. replicate with a higher mutation frequency. e. are transported across lipid membranes.
How do pseudogenes differ from genes? a. They are not transcribed. b. They contain longer open reading frames (ORFs). c. They do not have introns. d. They use a different genetic code. e. Their protein-coding sequence contains more than one startcodon.
A major difference between hereditary information in eukaryotes and prokaryotes is: a. in prokaryotes, the hereditary information is distributed among individual, linear DNA molecules in the nucleus. b. in eukaryotes, the hereditary information is encoded in a single, circular DNA molecule. c. in prokaryotes, the hereditary information is usually distributed among multiple circular DNA molecules in the cytoplasm. d. in eukaryotes, the hereditary information is distributed among individual, linear DNA molecules in the cytoplasm. e. in eukaryotes, the hereditary information is distributed amoung individual, linear DNA molecules in the nucleus.
Which of the following statements about DNA is false? a. Phosphate is linked to the 5 and 3 carbons of adjacentdeoxyribose molecules. b. DNA is bidirectional in its synthesis. c. Each side of the helix is antiparallel to the other. d. The binding of adenine to thymine is through three hydrogenbonds. e. Avery identified DNA as the transforming factor in crossesbetween smooth and rough bacteria.
A scientist creates fruit fly larvae with a mutation that eliminates the exonuclease function of DNA pol III. Which prediction about the mutational load in the adult fruit flies is most likely to be correct? The adults with the DNA pol III mutation will have significantly more mutations than average The adults with the DNA pol III mutation will have slightly more mutations than average The adults with the DNA pol III mutation will have the same number of mutations as average The adults with the DNA pol III mutation will have fewer mutations than average.
Which description is an example of a phenotype? A certain duck has a blue beak A mutation occurred to a flower Most cheetahs live solitary lives both a and c
A chromosome contains many different genes that are transcribed into different ___ . a. proteins b. polypeptides c. RNAs d. a and b