WHAT IS LIFE LL W/ LAUNCHPAD
4th Edition
ISBN: 9781319231859
Author: PHELAN
Publisher: Macmillan Higher Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 16, Problem 6SA
Summary Introduction
To analyze:
Why some species live longer and how the life-span of a species could be increased.
Introduction:
The environment in which an organism evolves plays a role in determining the life-span of the organism.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Most eukaryotic organisms use sexual reproduction as their primary means of perpetuating their species. Gametes are formed via meiosis. However, some species primarily reproduce via asexual means. Reproduction is accomplished via mitosis. Aspen trees most commonly reproduce by such asexual methods of cloning.What are the advantages and disadvantages of reproduction by asexual means?
Why do some species reproduce in this manner?
Why don't all species?
How can we account for the extensive differences between the two species?
The biological species concept depends on the existence of barriers to reproduction. What are they? Does this species concept apply in all situations? Think of an example from nature where the biological species concept would NOT be that applicable. Which species concept would be better in this example?
How does speciation occur? What environmental factors might contribute to speciation? Can an individual speciate? Use terminology for the two kinds of speciation we have learned about.
What is “gene flow”? What does it mean if there is NO gene flow?
Two groups of individuals are separated by either side of a canyon. One researcher found that they do not cross the canyon at any point. The group on the north side have fluffy tails and thicker coats, and they do not eat moss. The south side individuals eat moss almost exclusively, have a thin coat and tail, but otherwise are generally identical. When in the lab they mated successfully, and the offspring of that mating also mated…
Chapter 16 Solutions
WHAT IS LIFE LL W/ LAUNCHPAD
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Why do some species survive while others go extinct? Explainarrow_forwardIn the context of the evolutionary relationship among ants, wasps, and bees, how come that these insects have shared common characteristics?arrow_forwardwhat is alternation of generations and could it be a good evolutionary strategy for some organismsarrow_forward
- Why is variation amongst individuals of the same species important in ensuring species survival? How is variation generated? CYTOGENETICSarrow_forwardWhat causes sexual dimorphism? Give some examples of sexually dimorphic species, and why you think that form of sexual dimorphism arose.arrow_forwardWhy do biologists believe that isogamy is the ancestral state? Given isogamy as a starting point, explain the evolution of anisogamy.arrow_forward
- A number of different, unrelated species of Arctic fishes have evolved an adaptation to avoid freezing in frigid, winter waters. These different species all use the same glycoprotein that they circulate through their blood to prevent ice crystals from forming in their bloodstream. What is the adaptation of freeze resistance in these fishes is an example of? Parsimony Paraphyly Homoplasy Synapomorphyarrow_forwardWhat is evolutionary history of a species called?arrow_forwardMulticellularity has evolved multiple times in different lineages on Earth. What is one major advantage of multicellularity over unicellularity? Multicellular organisms can move faster than unicellular organisms Multicellularity allows for specialization of cells into different tissues and organs Multicellular organisms have higher fitness than unicellular organisms. Multicellularity allows organisms to reproduce more rapidly. Only multicellular organisms can reproduce sexually.arrow_forward
- Three-spined sticklebacks that have colonized freshwater streams and lakes have repeatedly evolved into similar forms. The pattern can be seen in hundreds of freshwater bodies around the world. Can a single biological species arise more than once (i.e., polyphyletically)? How might this possibility depend on the nature of the reproductive barrier between such a species and its closest relative?arrow_forwardVolvox carteri, an volvocine alga, has approximately 2000 somatic cells and only 16 reproductive or germ line cells. The observation that multicellular individuals, like Volvox, have a much smaller subset of germ line cells compared to somatic cells appears to be general rule. Which of the following is the best evolutionary explanation for why this is the case? A) Organisms can biologically only contain a small number of germ line cells as they are always larger than somatic cells. B) Multicellular individuals with a germ line vs. somatic cell line differentiation only evolved a single time, thus all members of this lineage share the same scheme of more soma cells with a much smaller subset of germ line cells. C) Having a smaller subset of reproductive cells helps reduce the likelihood of cheating from evolving, which in turns prevents the collapse of the multicellular individual system. D) None of the above.arrow_forwardIn social insects, colonies often consist of a queen and workers. The workers are typicallydaughters of the queen. The queen is the only reproductive individual—the workers aresterile. a) According to Hamiton’s rule, what is the maximum ratio of cost to benefit (C/B) for theworkers in order for this system to evolve?b) Some colonies of ants have multiple queens, which can be related to different degrees.Imagine that two sisters start a colony, so that they are the mother or aunt to allworkers. What is the maximum ratio of cost to benefit (C/B) for the workers to sacrificefor their aunts?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License