The ozone layer of Earth's atmosphere helps to filter ultraviolet radiation.As the ozone layer is depleted, more ultraviolet radiation reaches Earth'ssurface. This increase in ultraviolet radiation may be harmful because it candirectly cause*O photosynthesis to stop in all marine organismsabnormal migration patterns in waterfowlmutations in the DNA of organismsO sterility in most species of mammals and birds

Solar energy is carried to earth in three layers- ultraviolet radiation, visible light, and infrared…

The ozone layer of Earth's atmosphere helps to filter ultraviolet radiation. As the ozone layer is depleted, more ultraviolet radiation reaches Earth's surface. This increase in ultraviolet radiation may be harmful because it car directly cause O photosynthesis to stop in all marine organisms O abnormal migration patterns in waterfowl O mutations in the DNA of organisms sterility in most species of mammals and birds

The ozone layer of Earth's atmosphere helps to filter ultraviolet radiation. As the ozone layer is depleted, more ultraviolet radiation reaches Earth's surface. This increase in ultraviolet radiation may be harmful because it car directly cause O photosynthesis to stop in all marine organisms O abnormal migration patterns in waterfowl O mutations in the DNA of organisms sterility in most species of mammals and birds

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter11: Genome Alterations: Mutation And Epigenetics

Section: Chapter Questions

Problem 15QP

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Molecular clocks are based on comparisons of the number of ______ mutations between species. a. lethal b. neutral c. conservative d. nonconservative
Just as anatomical homology can lead to vestigial structuressuch as human wisdom teeth and the wings of flightlessbirds, genetic homology can lead to vestigial DNA sequences.For example, most mammal species produce an enzyme,L-gulonolactone oxidase, that catalyzes the last step in the productionof vitamin C. The species that produce the enzyme areable to do so because they all inherited the gene that encodesit from a common ancestor. Humans, however, do not produceL-gulonolactone oxidase, so we can’t produce vitamin C ourselvesand must consume it in our diets. But even though wedon’t produce the enzyme, our cells do contain a stretch of DNAwith a sequence very similar to that of the enzyme-producinggene present in rats and most other mammals. The human version,though, does not encode the enzyme (or any protein). Weinherited this stretch of DNA from an ancestor that we share withother mammal species, but in us, the sequence has undergonea change that rendered it nonfunctional. (The…
Nucleotide Site 5. 2 3 4 7. 8. 10 T C G Outgroup Sislaf rose G G C T Glozzom rose G G G A T Pentwist rose T. G G G Trealop rose G G G G A C C T G G G G T C C T. Miresa rose OG A В C E Based on the molecular data listed in the data matrix, match the correct taxon with the position on the tree. Note that OG stands for outgroup. 1. trealop rose II, miresa rose III. glozzom rose IV. pentwist rose V. sislaf rose O E A.
Neanderthal Hair Color The MC1R gene regulates pigmentation in humans (Sections 14.1 and 15.1 revisited), so loss-of-function mutations in this gene affect hair and skin color. A person with two mutated alleles for this gene makes more of the reddish melanin than the brownish melanin, resulting in red hair and pale skin. DNA extracted from two Neanderthal fossils contains a mutated MC1R allele that has not yet been found in humans. To see how the Neanderthal mutation affects the function of the MC1R gene. Carles Lalueza-Fox and her team introduced the allele into cultured monkey cells (FIGURE 26.16). FIGURE 26.16 MC1R activity in monkey cells transgenic for an unmutated MC1R gene, the Neanderthal MC1R allele, or the gene for green fluorescent protein (GFP). GFP is not related to MC1R. 1. How did MCR1 activity in monkey cells with the mutant allele differ from that in cells with the normal allele?
Neanderthal Hair Color The MCIR gene regulates pigmentation in humans (Sections 14.1 and 15.l revisited), .so loss-of-function mutations in this gene affect hair and .skin color. A person with two mutated alleles for this gene makes more of the reddish melanin than the brownish melanin, resulting in red hair and pa le skin. DNA extracted from two Neanderthal fossils contains a mutated MC1R allele that has not yet been found in humans, To see how the. Neanderthal mutation affects the function of the MC1R gene, Carles Lalueza-Fox and her team introduced the allele into cultured monkey cells (FIGURE 26.1 6). FIGURE 26.16 MC1R activity in monkey cells transgenic for an unmutated MClR gene, the Neanderthal MC1R allele or the gene for green fluorescent protein (GFP). GFP is- not related to MC1R. 2. What does this imply about the mutations effect on Neanderthal hair color?
Neanderthal Hair Color The MCIR gene regulates pigmentation in humans (Sections 14.1 and 15.l revisited), .so loss-of-function mutations in this gene affect hair and .skin color. A person with two mutated alleles for this gene makes more of the reddish melanin than the brownish melanin, resulting in red hair and pa le skin. DNA extracted from two Neanderthal fossils contains a mutated MC1R allele that has not yet been found in humans, To see how the. Neanderthal mutation affects the function of the MC1R gene, Carles Lalueza-Fox and her team introduced the allele into cultured monkey cells (FIGURE 26.1 6). FIGURE 26.16 MC1R activity in monkey cells transgenic for an unmutated MClR gene, the Neanderthal MC1R allele or the gene for green fluorescent protein (GFP). GFP is- not related to MC1R. What purpose do the cells with the gene for green fluorescent protein serve in this experiment?
Higher mutation rate in human sperm thanin human eggs WHY?
PART IV. MOLECULAR BIOLOGY (DNA/PROTEIN SEQUENCES) Scientists use DNA/protein sequences to figure out which organisms are most closely related to each other. Cytochrome c is a protein found in mitochondria used in the study of evolutionary relationships among organisms. DIRECTIONS: Study the table below that shows the amino acid sequences for cytochrome c in several organisms. Compare the human amino acid sequence to the other species. Then, for each non-human organism, circde any amino acids different from the human amino acid sequence. Record how many differences you found in the table and answer the questions that follow. Organism Biochemical Data Ala Pro Tyr Ser lle Asp Lys Glu Ala Lys Val Asp Gly Glu Lys Glu Lys Human Glu Ala Glu Phe Ser Asp Thr Asp Lys Ser Chicken Pig Glu Ala Thr Glu Lys Glu Lys Ala Pro Phe Ser Asp Thr Asp| Thr Pro Phe Ser Asp Thr Phe Ser Asp Thr Glu Horse Glu Ala Pro Phe Thr Dog Whale Gly Ala Lys Glu Lys Gly Ala Lys Lys Glu Ala Glu Thr Glu Ala Val Thr Monkey Glu…
aterials Spirochaetes are free-living, anaerobic bacteria that contain spiral-shaped cells. Nematodes are roundworms that are incredibly diverse and, as a group, have adapted to survive in all environments. Which of the following statements accurately describes the DNA of both groups? * pdates ades embers nferences The spirochaete genome is smaller than the nematode genome. Q Online Nematode DNA is circular. sela Spirochaete chromosomes are composed of just DNA while nematode chromosomes also include specialized proteins. on Periods 1 and 2 eriods MP1, Highschool chool MP3, Spirochaete DNA is linear. MP4 Operons are clusters of genes that are regulated as a group. They can be characterized as either repressible or inducible. What is the main difference between the two? * d Thu Fri INTL 1
The zebra danios are a new type of pet fish, marketed as Glo-Fish. The fish were produced by transferring genes from jellyfish (green and yellow fish) and corals (red fish) into regular zebra danio fish (striped blue and white normally) embryos. Which of the following statements is true about these fish? O These fish have recombinant DNA They have been selectively bred. They are now photosynthetic This happens naturally in the wild.
All life shares DNA as the hereditary material. From an evolutionary perspective, why do you think this is the case? to expla uide the int unifyi lly a threa the pro number c res or pro volves the ly is gove molecule two key F
O Ability to see UV light Grades lembers nferences In the 1890s, hunting reduced the northern elephant seal population to only 20 individuals. Due to conservation efforts, their population size today is above 30,000. How would the genetic diversity of the northern elephant seal population compare to the genetic diversity of the southern elephant seal population, which was not heavily hunted? * g Online sela on Periods 1 and 2 riods MP1, Highschool The northern elephant seal would have much less genetic varlation than the southern elephent seal. hool MP3, The southern elephant sea would have much less genetic variation than the northern elephant seal. AP4 O The two populations would have similar genetic variation Thu Fri The southern elephant seal would have stable genetic variation because it is in Hardy- Weinberg equilibrium. You are studying two variations of banana slugs. They have similar coloration and ATthnh thare.nhveieallu obl lein thecomeheh US A 9:0