Most human coding genes have multiple introns, and some genes are known to have hundreds. Why...
Most human coding genes have multiple introns, and some genes are known to have hundreds. Why would higher animals adopt this complicated mechanism to encode the information for making proteins?
Homework Answers
Introns donot encode proteins but they are important part for the gene regulation. They encode functional RNA and after processing form noncoding RNA molecules . It is also used in alternate splicing for coding many proteins.
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Most human coding genes have multiple introns, and some
genes are known to have hundreds. Why...
000_ U SEJJIBU contentId-_876188.1&step Question Completion Status: QUESTION 1 In eukaryotic genes, a. coding exons are...
000_ U SEJJIBU contentId-_876188.1&step Question Completion Status: QUESTION 1 In eukaryotic genes, a. coding exons are separated by noncoding introns b. coding introns are separated by noncoding exons c. all genes consist of an uninterrupted coding sequence d.genes can include the coding sequences for multiple proteins e. both (c) and (d) QUESTION 2 A gene with 8 exons would have ___ introns. b.9 0.8 d. 24 e. 16 QUESTION 3 The gene for rhodopsin has 5 exons and 6706 nucleotides....
Alternative splicing is present in about 90% of human genes and can explain why our 20,325...
Alternative splicing is present in about 90% of human genes and can explain why our 20,325 genes can encode more than 1,000,000 proteins. Examine the image below of Gene X: Exon A Intron #1 Exon B Intron #2 Exon C 1. (2 pts) To create a transcript, which portions of this DNA sequence would be REMOVED during splicing? (Please be specific-ie. Exon A, Intron #2, etc.) 2. (3 pts) Gene X can encode 7 different proteins! Explain how this is...
how do you solve this? Animals have anywhere from one to three opsin genes in their...
how do you solve this?
Animals have anywhere from one to three opsin genes in their genomes. These genes encode proteins that sense different wavelengths of light and confer color vision. a. The relationship between the human opsin gene that senses light in the blue range and the dog opsin gene that senses light in the blue range is ✓ [Select] Pseudogene Ortholog Paralog the human opsin gene that senses light in the blue range and the human gene that...
In humans, there are about 200 different types of cells. Why are your liver cells different...
In humans, there are about 200 different types of cells. Why are your liver cells different from skin cells, or neurons, or muscle cells? During development, each cell accumulates different mutations changing their DNA They produce the same proteins but some of those proteins are denatured in each cell They have different DNA and thus, each cell produces different proteins They produce the same kind of proteins but not all proteins are active in each cell They have the same...
Each human α-globin locus contains two α-globin genes, α1 and α2, and most individuals have two...
Each human α-globin locus contains two α-globin genes, α1 and α2, and most individuals have two copies of the locus. Which of the genotypes would result in the most severe phenotype? (A"–" represents a deletion allele.) Select one: a. α1 – / α2 – b. α1 – / α2 α2 c. α1 α1 / – – d. α1 α1 / α2 α2 e. α1 – / – –
2. List some familiar adaptations animals have to reduce the effects of temperature extremes on their...
2. List some familiar adaptations animals have to reduce the effects of temperature extremes on their many vital, enzyme-catalyzed reactions. 3. In general, the rates of chemical reactions double for every 10 degrees (Celsius) increase in temperature. What changes at the molecular level account for slower reaction rates of enzyme- catalyzed reactions at high temperatures? (Hint: enzymes are protein molecules. What happens to protein molecules when they are heated?) Why are enzyme catalyzed reactions also slower at low temperatures? (Hint:...
Below is a series of events involved in the mechanism of forming a retrotransposon. Place these...
Below is a series of events involved in the mechanism of forming a retrotransposon. Place these steps in the correct order 1. the DNA copy is made double-stranded 2. DNA of the transposable element is transcribed 3. The DNA of the transposable element is integrated into a target DNA site 4. The RNA is reverse transcribed by reverse transcriptase, producing a complementary DNA 4,2,3,1 3,2,4,1 2,4,1,3 4,2,1,3 1,2,3,4 What is the function of the poly(A) tail on most mRNAs To...
Which of the following modes of evolution would be considered adaptive evolution? Explain why or why...
Which of the following modes of evolution would be considered adaptive evolution? Explain why or why not. a. Genetic drift b. Natural selection In the wild, various sperm and egg cells must navigate a complex environment to complete fertilization. There are mechanisms in place at the molecular level to guard against interspecies fertilization, even between very closely related species. Some of these mechanisms involve lock and key functions of interacting proteins. These molecules most likely regulate which type of reproductive...
Sensation &Perception- Chapter 2 Human beings do not have the most sensitive or acute sensory systems in the ani...
Sensation &Perception- Chapter 2 Human beings do not have the most sensitive or acute sensory systems in the animal world. Some bats can hear frequencies that exceed 100,000 Hertz, dolphins receive auditory messages from great distances, and cats can probably localize sounds better than we do because they can rotate their ears. Rats see better at night than we can, eagles have more acute distance vision, and horses have a wider visual field. Rabbits have more taste buds than we...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question 1)...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question 1) Altprotists are eukaryotic B) mixotrophie Cunicellular D) symbionts 2) An individual mixotroph loses its plastids, yet continues to survive. Which of the following most likely accounts for its continued survival? C lt engulfs organic material by phagocytosis or by absorption 3) It relies on photosystems that float freely in its cytosol. C) It has an endospore. D) It must have gained extra mitochondria when...
000_ U SEJJIBU contentId-_876188.1&step Question Completion Status: QUESTION 1 In eukaryotic genes, a. coding exons are separated by noncoding introns b. coding introns are separated by noncoding exons c. all genes consist of an uninterrupted coding sequence d.genes can include the coding sequences for multiple proteins e. both (c) and (d) QUESTION 2 A gene with 8 exons would have ___ introns. b.9 0.8 d. 24 e. 16 QUESTION 3 The gene for rhodopsin has 5 exons and 6706 nucleotides....
Alternative splicing is present in about 90% of human genes and can explain why our 20,325 genes can encode more than 1,000,000 proteins. Examine the image below of Gene X: Exon A Intron #1 Exon B Intron #2 Exon C 1. (2 pts) To create a transcript, which portions of this DNA sequence would be REMOVED during splicing? (Please be specific-ie. Exon A, Intron #2, etc.) 2. (3 pts) Gene X can encode 7 different proteins! Explain how this is...
how do you solve this?
Animals have anywhere from one to three opsin genes in their genomes. These genes encode proteins that sense different wavelengths of light and confer color vision. a. The relationship between the human opsin gene that senses light in the blue range and the dog opsin gene that senses light in the blue range is ✓ [Select] Pseudogene Ortholog Paralog the human opsin gene that senses light in the blue range and the human gene that...
In humans, there are about 200 different types of cells. Why are your liver cells different from skin cells, or neurons, or muscle cells? During development, each cell accumulates different mutations changing their DNA They produce the same proteins but some of those proteins are denatured in each cell They have different DNA and thus, each cell produces different proteins They produce the same kind of proteins but not all proteins are active in each cell They have the same...
2. List some familiar adaptations animals have to reduce the effects of temperature extremes on their many vital, enzyme-catalyzed reactions. 3. In general, the rates of chemical reactions double for every 10 degrees (Celsius) increase in temperature. What changes at the molecular level account for slower reaction rates of enzyme- catalyzed reactions at high temperatures? (Hint: enzymes are protein molecules. What happens to protein molecules when they are heated?) Why are enzyme catalyzed reactions also slower at low temperatures? (Hint:...
Below is a series of events involved in the mechanism of forming a retrotransposon. Place these steps in the correct order 1. the DNA copy is made double-stranded 2. DNA of the transposable element is transcribed 3. The DNA of the transposable element is integrated into a target DNA site 4. The RNA is reverse transcribed by reverse transcriptase, producing a complementary DNA 4,2,3,1 3,2,4,1 2,4,1,3 4,2,1,3 1,2,3,4 What is the function of the poly(A) tail on most mRNAs To...
Sensation &Perception- Chapter 2 Human beings do not have the most sensitive or acute sensory systems in the animal world. Some bats can hear frequencies that exceed 100,000 Hertz, dolphins receive auditory messages from great distances, and cats can probably localize sounds better than we do because they can rotate their ears. Rats see better at night than we can, eagles have more acute distance vision, and horses have a wider visual field. Rabbits have more taste buds than we...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question 1) Altprotists are eukaryotic B) mixotrophie Cunicellular D) symbionts 2) An individual mixotroph loses its plastids, yet continues to survive. Which of the following most likely accounts for its continued survival? C lt engulfs organic material by phagocytosis or by absorption 3) It relies on photosystems that float freely in its cytosol. C) It has an endospore. D) It must have gained extra mitochondria when...
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