Question 17 (Mandatory) (2 points) ✓ SavedWhich of the following life-history strategies would you expect to be most commonin a stable environment?A) N-selection○ B) Natural selection○C) r-slectionOD) K-selection○ E) More than one of the above is correctQuestion 18 (Mandatory) (4 points)✓ SavedMatch the following population with its most likely dispersion pattern.

K-selection refers to a life-history strategy that is favored in stable environments where the…

Answered: Question 17 (Mandatory) (2 points) ✓…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Answer the following: Topic 1: Model Organisms 1. Which among the model organisms used as an option for an inexpensive tool for genetic studies with the shortest generation time? A. Saccharomyces cerevisiae B. Escherichia coli C. Arabidopsis thaliana D. Caenorhabditis elegans Topic 2: Population Ecology 2. Ecological footprint increases with available ecological capacity. The higher the available ecological capacity, the more the ecological footprint must decline. A. Only the first statement is correct B. Only the second statement is correct C. Both statements are correct D. Both statements are incorrect
Please help with the following: The United Nations predicts that the human global population is most likely to stabilize at 9 billion within the next 100 years. If the population level remains at this level for the next 10 KY, what would you predict about the strength of selection required to overcome the effects of genetic drift, compared to today’s values? A. It would be the same. B. The future strength of selection would be greater than today’s values. C. Not enough information. D. Today’s strength of selection would be greater than in the future
Question 3: I introduced 2 species of super-mutant ant species into my terrarium. These are the only species competing for resources. Species 1's common name is the TEN-headed ZINGer ant and they have a population size of N1 and a carrying capacity of K1. The blue line shows the isocline for species 1. Species 2's common name is the Evil Ant. The population size of species 2 is N2 and the carrying capacity is K2. The green line shows the isocline for species 2 The red dot is the present combination of N1 and N2. Part a) Given the data how will the population of both species (N1 and N2) change- pick the correct colored arrow (pink, brown, black, or red) to show the direction that the combination of N1 and N2 will change
The Tibetans and Han Chinese share several genetic traits and DNA. However the EPAS1 gene which increases the ability of red blood cells carry oxygen even in low environments, is only commonly found in the Tibetan population that live in higher elevations. Explain why this gene is commonly in Tibetan populations from the perspective of competitive advantage and natural selection. Write your answer in 3-5 sentences
QUESTION 1 Why are island chains such as the Galapagos Islands a good place to observe the effects of evolution? Mutation rates are higher on island chains Organisms that live on islands tend to reproduce more quickly The relatively rapid geological changes that happen on islands can create distinct environments where different traits are selected for Living things are not capable of traveling from one island to another Save
(Following Question 25) If a mutation occurred such that A2 allele appeared in this population. The new allele has the effect of reproducing one year earlier but at the cost of not being able to reproduce after age 6. Can A2 allele be selected for and subsequently fixed in the population? Yes, because A2 allele exhibits the antagonistic pleiotropic effect. Yes, because carriers of the A2 allele have a higher expected lifetime reproductive success than the individuals carrying the A1 allele. No, because carriers of the A2 allele live fast, therefore they will always die young. No, because the carriers of the A2 allele have a lower expected lifetime reproductive success. Therefore, the A2 allele is a deleterious allele. Not enough information in this problem that would allow us to make an informed prediction.
Imagine you were to collect data from simulation 2 (negative selective pressure on SS genotypes) over five generations. The frequency of the S allele over time is graphed below. The graph shows a rapid decrease in the sickle cell allele frequency in the first generation but a slower decrease in later generations. By the fifth generation, the allele is not completely eliminated from the population. Provide two plausible explanations for why the S allele persists after five generations.
Considering the Hardy-Weinberg theorem’s assumptions, which of the following statements is NOT correct? (Recall that there are certain assumptions that must be true in order for the Hardy-Weinberg theorem to accurately predict genotype ratios in the next generation.)a) The population must be very large so there random genetic drift will not occur.b) No natural selection can occur.c) Mating must be random.d) Individuals must migrate into and out of the population so that gene flow will occur.e) Mutations must not occur.
Question 1. Is the population in H-W equilibrium? Observed genotype frequencies ● ■ ● f[A₁A₁] =0.16 f[A₁A₂] =0.48 f[A₂A₂] =0.36 O Question 2. Is the population in H-W equilibrium? Observed genotype frequencies f[A₁A₁] =0.04 f[A₁A₂] =0.12 ● f[A₂A₂] =0.84 ● Question 3. Is the population in H-W equilibrium? Observed genotype numbers A₁A₁ =40 A1A2 =20 ● A₂A2 =40 O Question 4: Is the population in H-W equilibrium? Observed number of each genotype A1A1=36 ● ● A1A2=28 A2A2=36 Note that raw numbers are given. The question is whether observed frequencies = expected frequencies. You must first compute the genotype frequencies.
33 As 33 As Light skin pigmentation Arsenic-rich Cold Elevation Short Cholera resistance environment Marine Lactose Malaria diet tolerance resistance climate stature EVOLUTION 4e, Figure 6.28 © 2017 Sinauer Associates, Inc. b) Evolutionary biologists often say that evolution "selects for outcomes" not for the particular genetic changes that lead to that adaptive outcome. Given that perspective, is it surprising that different gene mutations might be involved in the evolution of the same trait (such as light skin or adaptation to living in high mountains)? Why or why not?
Explain why the experimental procedures performed by Lenski (and his lab) caused the fitness of the bacteria to increase over time (especially early on) in all 12 of his populations.
An island population of frogs carries a rare allele at a frequency of 0.1. This same allele is present on the mainland at a frequency of 0.4. If the migration rate from the mainland to the island occurs at a rate of m = 0.2, what is the expected frequency of this rare allele on the island after the influx of immigrants?A) 0.0 < q < 0.2B) 0.2 < q < 0.4C) 0.4 < q < 0.6D) 0.6 < q < 0.8E) 0.8 < q < 1.0

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