Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 55, Problem 3S
Refer to figure 55.14. Because the number of offspring that a parent can produce is often a trade-off with the size of individual offspring, many circumstances lead to an intermediate number and size of offspring being favored. If the size of an offspring was completely unrelated to the quality of that offspring (its chances of surviving until it reaches reproductive age), would you expect parents to fall on the left or right side of the x-axis (clutch size)? Explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
list and briefly describe the three process that lead to variation in offspring with the same parents.
The genetic identity of the female parent is RrGg and the genetic identity of the male parent is Rrgg. They produce 320 offspring together from a single mating:
57 red-eyed females with grey bodies, 61 red-eyed females with yellow bodies, 22 brown-eyed females with grey bodies, 20 brown-eyed females with yellow bodies.59 red-eyed males with grey bodies, 63 red-eyed males with yellow bodies, 20 brown-eyedmales with grey bodies, 18 brown-eyed males with yellow bodies.
Show the simultaneous transmission of the two genes involved to give rise to the progeny given with the use of genetic diagrams and summaries as required. (Hint: you are only requiredto show the simultaneous transmission from the P to F1 generations)
The graph in the right hand column shows the incidence of Down syndrome in the offspring of normal parents as the age of the mother increases. For women under the age of 30, how many infants with Down syndrome are born per 1,000 births? How many for women at age 40? At age 50? How many times more likely is a 50-year-old woman to give birth to a baby with Down syndrome than a 30-year-old woman?
Chapter 55 Solutions
Biology
Ch. 55 - Source-sink metapopulations are distinct from...Ch. 55 - The potential for social interactions among...Ch. 55 - When ecologists talk about the cost of...Ch. 55 - Prob. 4UCh. 55 - The difference between exponential and logistic...Ch. 55 - Prob. 6UCh. 55 - Which of the following is an example of a...Ch. 55 - If the size of a population is reduced due to a...Ch. 55 - In populations subjected to high levels of...Ch. 55 - In a population in which individuals are uniformly...
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
- Please discuss the fitness advantage associated with aiding a related or even an unrelated individual with producing offspring. Please give examples.arrow_forwardIf self-fertilization causes lower fitness than cross-fertilization, under what environmental conditions would self-fertilization be the superior strategy?arrow_forwardPlease read the scenario below, and then answer the question (in bold) that follows. In cats, the allele (B) produces a black coat color and the allele (b) produces a yellow coat color. These alleles are incompletely dominant to each other. A heterozygote produces a tortoise shell coat color. The alleles (B) and (b) are also sex-linked (i.e., they are carried on the X chromosome), and cats possess an XX-XY sex determination system, like humans. If a female cat with a tortoise shell coat mated with a male cat who had a yellow coat... What gametes would be produced by the female (i.e., mother) cat? a. XBXb b. XB and Xb c. B and b d. Xb and Y e. None of the abovearrow_forward
- Please read the scenario below, and then answer the question (in bold) that follows. In cats, the allele (B) produces a black coat color and the allele (b) produces a yellow coat color. These alleles are incompletely dominant to each other. A heterozygote produces a tortoise shell coat color. The alleles (B) and (b) are also sex-linked (i.e., they are carried on the X chromosome), and cats possess an XX-XY sex determination system, like humans. If a female cat with a tortoise shell coat mated with a male cat who had a yellow coat... What percentage of their offspring will have tortoise shell coats? a. 0% b. 25% c. 50% d. 75% e. 100%arrow_forwardHow can an asexually reproducing organism affect the abundance of an individual in a population? Does it make it difficult to define an individual in a population? Defend your answer.arrow_forwardIn rabbits, the gene that codes for a spotted coat is dominant over the gene that codes for a solid coat, and the gene for the coat's black color is dominant over the gene for the coat's brown color. If a spotted, black-coated rabbit mates with a solid, brown-coated rabbit, what are the genotypes and phenotypes of their offspring?arrow_forward
- In reptiles, sex determination was thought to be controlled by sex-chromosome systems or by temperature-dependent sex determination without an inherited component to sex. But as we discussed in section 7.6, in the Australian lizard, Pogona vitticeps, it was recently revealed that sex is determined by both chromosome composition and by the temperature at which eggs are incubated. What effects might climate change have on temperature- dependent sex determination in this species, and how might this impact the sex ratio for this species in subsequent generations?arrow_forwardIf a drone with short wings and black eyes was mated to a queen that is heterozygous for both genes, what are the predicted genotypic and phenotypic frequencies of the offspring, (assume an equal number of male and female offspring are produced)?arrow_forwardIn hamsters, black fur (B) is dominant over brown fur (b) and long fur (L) is dominant over short fur (l). A black, long-furred female whose mother had brown fur and whose father had short fur is mated with a black, short-furred male whose father had brown, long fur. a. What is the probability that the first three offspring will have brown, long fur? b. What is the probability that the first offspring will have black, long fur? c. What is the probability that one of the first three offspring will have black, long fur and the other two brown, short fur? d. What is the probability that the first offspring will have either brown, long fur or black, short fur? e. What is the probability that the first offspring will have brown, long fur and the second black, short fur?arrow_forward
- If an X-linked recessive trait is present in 4 percent of the males in a population with random mating, what is the frequency of carrier females?arrow_forwardPlease read the scenario below and answer the question (in bold) that follows: An aquatic arthropod called a Cyclops has antennae that are either barbed (B) or smooth (b). In the same organism, non-resistance to pesticides (P) is dominant over resistance to pesticides (p). If a Cyclops that has smooth antennae and is resistant to pesticides is crossed with one that is heterozygous for both traits… 1. What percentage of their offspring will have smooth antennae and be resistant to pesticides? 2.What percentage of their offspring will have barbed antennae? Answer choice are 0%, 25%, 50%, 75%, 100%arrow_forwardAfter five generations of random mating, what is the frequency of the a allele?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY