BIO 1406/07 BK/LAB/CODE PREPACK
12th Edition
ISBN: 9781265538590
Author: Raven
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 20, Problem 2DA
Assuming that the values on the x-axis represent the final body size of different animals and that the y-axis represents egg-laying rate and survival once they reach that size, how many eggs would you expect a 12-mm water strider to lay? And a 15-mm strider?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What can you infer about bats compared to other mammals?
What do you conclude about the effect of hibernation on survival?
What do you conclude about the effect of body mass on survival?
After observing a finite population of asexually reproducing salamanders, which of the following outcomes is consistent with Müller’s ratchet?
a.
The population fitness will decline due to the least fit individuals randomly not surviving to produce offspring into the next generation.
b.
The population fitness will increase due to the most fit individuals randomly not surviving to produce offspring into the next generation.
c.
The population fitness will decline due to the most fit individuals randomly not surviving to produce offspring into the next generation.
d.
The population fitness will increase due to the least fit individuals randomly not surviving to produce offspring into the next generation.
To conduct their experiment, the researchers collected L. peronii eggs from a natural stream. After the eggs had hatched, tadpoles were raised in artificially constructed 2 L containers in a laboratory. All containers were filled with 1 L of filtered tap water, and the water was changed every other day. Thirteen tadpoles were placed in each container, and the tadpoles were exposed to a 12-hour light: 12-hour dark photoperiod. All tadpoles were fed thawed spinach daily.
The researchers randomly placed the tadpoles into containers exposed to one of four treatments, with nine replicates of each treatment, as follows:
Low UVBR (<6.0 kJ/m2), low temperature (15OC)
Low UVBR (<6.0 kJ/m2), high temperature (26OC)
High UVBR (>70.0 kJ/m2), low temperature (15OC)
High UVBR (>70.0 kJ/m2), high temperature (26OC)
The researchers recorded the number of tadpoles still alive out of the original 13 in a container (percent survival) at different time periods. Their results at Week 4,…
Chapter 20 Solutions
BIO 1406/07 BK/LAB/CODE PREPACK
Ch. 20.1 - Define evolution and population genetics.Ch. 20.1 - Prob. 2LOCh. 20.2 - Explain the HardyWeinberg principle.Ch. 20.2 - Describe the characteristics of a population that...Ch. 20.2 - Prob. 3LOCh. 20.3 - Define the five processes that can cause...Ch. 20.3 - Prob. 2LOCh. 20.4 - Prob. 1LOCh. 20.4 - Prob. 2LOCh. 20.4 - Demonstrate how the success of different...
Ch. 20.5 - Prob. 1LOCh. 20.5 - Prob. 2LOCh. 20.5 - Prob. 3LOCh. 20.6 - Define frequency-dependent selection, oscillating...Ch. 20.6 - Prob. 2LOCh. 20.7 - Define and contrast disruptive, directional, and...Ch. 20.7 - Prob. 2LOCh. 20.8 - Explain how experiments can be used to test...Ch. 20.9 - Prob. 1LOCh. 20.9 - Prob. 2LOCh. 20.10 - Prob. 2LOCh. 20 - If all white cats died, what proportion of the...Ch. 20 - Assuming that the values on the x-axis represent...Ch. 20 - Prob. 3DACh. 20 - Prob. 4DACh. 20 - Examine the index of copper tolerance on nonmine...Ch. 20 - Prob. 6DACh. 20 - Why are rare alleles particularly likely to be...Ch. 20 - Prob. 2IQCh. 20 - Prob. 3IQCh. 20 - Prob. 4IQCh. 20 - Prob. 5IQCh. 20 - Prob. 6IQCh. 20 - Prob. 7IQCh. 20 - Prob. 8IQCh. 20 - Prob. 9IQCh. 20 - Assortative mating a. affects genotype frequencies...Ch. 20 - When the environment changes from year to year and...Ch. 20 - Many factors can limit the ability of natural...Ch. 20 - Stabilizing selection differs from directional...Ch. 20 - Founder effects and bottlenecks are a. expected...Ch. 20 - Relative fitness a. refers to the survival rate of...Ch. 20 - For natural selection to result in evolutionary...Ch. 20 - Prob. 8UCh. 20 - In a population of red (dominant allele) or white...Ch. 20 - Genetic drift and natural selection can both lead...Ch. 20 - Prob. 3ACh. 20 - Prob. 4ACh. 20 - In Trinidadian guppies a combination of elegant...Ch. 20 - On large, black lava flows in the deserts of the...Ch. 20 - Based on a consideration of how strong artificial...
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
- In a population of snails occupying a single small pond, some individuals possess a single sex, and some individuals are simultaneous hermaphrodites that are capable of reproducing with both males and females. After monitoring the snail population for several years, you find that an average male-only pond snail produces 10 offspring per week during the peak of the reproductive season, while an average female-only pond snail produces 40 offspring per week during the same period. In addition, the average hermaphroditic pond snail produces 30 offspring using its male function and 20 offspring using its female function per week. What is the order of these three reproductive strategies, highest to lowest, in terms of their relative fitness? A. female > hermaphrodite > male B. male > hermaphrodite > female C. female > male > hermaphrodite D. hermaphrodite > male > female E. hermaphrodite > female > male F. male > female > hermaphroditearrow_forwardWhat is the name of the "law" described by the formula in (1) (where R is how related two individuals a and b are, B is the reproductive benefit to B and C is the reproductive cost to a? (1) RabBb > Caarrow_forwardWhich statement below is FALSE regarding the differences between sea urchin and mammals? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a External fertilization is observed in sea urchins, whereas internal fertilization is used in mammals. External fertilization is observed in mammals, whereas internal fertilization is used in sea urchins. Urchins produce thousands of eggs, whereas humans produce only one egg that when fertilized becomes a zygote. Once sea urchins release their gametes, they move on to feeding on other normal activities and do not worry about their progeny at all. Unanswered A Submitarrow_forward
- Please complete the calculations in the following life table of an imaginable rodent. Round up or down to 2 decimals and use a zero before the decimal point (Ex: 0.02). 1a : Based on the table used above, what is the net reproductive rate? Round up or down to 2 decimals and use a zero before the decimal point (Ex: 0.02). 1b: Based on the table used above, what is the generation time? 1c: Based on the table used above, if this population of rodents grew exponentially, what would the intrinsic growth rate be?arrow_forwardThe female mouse eventually gives birth to 10 brown pups. Which of your two Punnett Squares is best supported by this evidence? Why? Note: Be sure to clearly identify which Punnett Square you are talking about in your answer (you may want to go back and label the Punnett Squares in your previous question (ex. "Punnett Square 1" and "Punnett Square 2") if you haven't already).arrow_forwardDarwin’s finches (Thraupidae, Passeriformes) have beaks of different shapes that allow them to feed on many different diets: insects, seeds, berries, and young leaves. For example, large ground finch has a very deep and broad bill adapted to crack hard and large seeds, while the cactus finch has an elongated and pointy beak for probing cactus flowers and fruits. Geospiza finch bills develop their distinct shapes during embryogenesis and are apparent upon hatching. Figure below is species-tree estimation of phylogenetic relationships among the Galápagos finches using mtDNA and nuclear loci information. ***Branch lengths are proportional to time and genetic distance except for abbreviated basal node depth.*** Photographs of profiles of each species are shown. Identify all species pair(s) who have the most similar DNA sequence and clearly explain why. Would Ce. fusca and Ce. olivacea be considered as one of the pair with the most similar DNA sequence given that "branch lengths are…arrow_forward
- When the fitness increment of increased male function results in a small cost in fitness of female function, would a population evolve hermaphrodites?arrow_forwardAll blanks have three options. Males, females, or neither.arrow_forwardWhat are the relative advantages and disadvantages ofsemelparity and iteroparity? In answering, consider iteroparousspecies that have both short and long expected life spans in theirnatural environments.arrow_forward
- Some marine fishes exhibit a spectacular polyphenism, in that individuals can, under special circumstances, change their sex from female to male (in other species, the switch goes from male to female). This developmental change involves reproductive organs, hormones, and mating behavior (Warner 1984). In some species, the removal of a dominant, breeding male from a cluster of females triggers a sex change in the largest female present. Identify the apparent developmental restrictions imposed on this system, such as the requirement that a female be transformed into a male rather than some sort of intermediate sex. Speculate on the benefits associated with each restriction.arrow_forwardIn normal plants, the probability that an offspring of a heterozygous parent is heterozygous is 0.5. If the survival of heterozygous offspring differs from that of homozygous offspring, the probability that a surviving offspring is heterozygous may not be equal to 0.5. For the following values of the probability, write a discrete-time dynamical system for the fraction of heterozygous offspring over time, find the solution, and compute the fraction that will be heterozygous after ten generations. How does this compare with the fraction for a normal plant? The probability that an offspring is heterozygous is 0.6.arrow_forwardThe following pattern of mortality was observed in a fictitious mammal. Of the newborn females, half survived for 1 year, 10% survived for 2 years, 3.75% survived for 3 years, 1.5% survived for 4 years, and none survived for 5 years. Breeding occurred once a year, and immediately following the breeding season the age-specific reproductive rates were determined from the fresh placental scars of females of known age. One-year-old females had an average of 2.8 placental scars per female, 2-year-old females had an average of 4.0 placental scars per female, and older females had an average of 4.8 placental scars per female. There was a 50:50 sex ratio at birth. A. Calculate the values of re and rm for this population. B. Determine the transition or Leslie matrix for this population. C. Suppose a population with an excess of males was started with ten 1-year-old females and 20 2-year-old females just prior to breeding. Calculate the number of females in each age class over the next 3 years.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Animal Adaptations for Kids, Learn about physical, life cycle, and behavioral adaptations of animals; Author: Learn Bright;https://www.youtube.com/watch?v=m2MibjJgyjs;License: Standard youtube license