Which of the following statements is true about certainty of paternity? Question 12 options: Certainty of paternity is low when egg laying and mating occur together, as in external fertilisation. Certainty of paternity is high in most species with internal fertilisation because the acts of mating and birth are separated by time. Certainty of paternity is low when males guard females they have mated. Paternal behaviour exists because it has been reinforced over generations by natural selection

Which of the following statements is true about certainty of paternity? Question 12 options: Certainty of paternity is low when egg laying and mating occur together, as in external fertilisation. Certainty of paternity is high in most species with internal fertilisation because the acts of mating and birth are separated by time. Certainty of paternity is low when males guard females they have mated. Paternal behaviour exists because it has been reinforced over generations by natural selection

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 8QP: How Can We Measure Allele Frequencies in Populations? In a population where the females have the...

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The following table provides phenotypic data for a population of mammoths living in cold environments based on fossil and DNA evidence. Based on this data and your knowledge of natural selection, which explanation best explains the trends seen in the data? Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring. Individuals within this population of mammoths tend to only mate with individuals that have thick fur. This population of mammoths appear to be in Hardy-Weinberg equilibrium since no allele frequencies are changing over time. Individuals with thick fur migrated into the population of mammoths, increasing the proportion of these individuals.
Male California sea lion mating success is determined by the number of mates they can acquire. Larger males are more successful at maintain larger territories. Females remain in one territory for the duration of the mating season and larger territories support more females than smaller territories. Additionally, the most successful males will fast during mating season to remain present in their territory at all times. If they leave to hunt they risk loss of their territory and access to all the females present in it. Which of the following best describes sexual selection in this species? a. Males likely engage in male-male combat to maintain territories. b. Intersexual selection is likely stronger than intrasexual selection. c. Sexual selection on the females is stronger than on the males. d. Females will mate with smaller males at a higher frequency than larger males
A population of frogs consists of 1000 individuals of which 400 are red. Red is recessive to Green. What is the frequency of the dominant allele and the recessive allele in this population? What is the frequency of individuals with homozygous dominant phenotypes? Please answer and show all work, thank you!! :)
Which of the following is a case of directional selection? Question 70 options: During a drought, individual leopard frogs of intermediate body size are less likely to survive than large and small individuals. During a drought, individual house finches with intermediate beak size are more likely to survive than individuals with large or small beaks. During a drought, individual cattails that are heterozygous at a particular locus are more likely to die than homozygous individuals. During a drought, the larger individuals in a population of lizards are less likely to survive than the smaller ones.
Mark each statement as True/ False while describing frequency dependent, frequency independent and sexual selection. In negative frequency selection, rare phenotypes are selected against In positive frequency selection, the more common phenotype is selected for The long mane of the male lion which is not present in females is an example of sexual dimorphism An example of the handicap principle can be seen in the similar body forms of male and female birds such as the mourning dove The antlers seen in male antelope, caribou, and mountain goats are example of sexual dimorphism
Normally, male red ducks only try to mate with females of their own species. A researcher swapped eggs between the nests of red ducks and blue ducks (a different species) and found that if male red ducks were raised by female blue ducks, later in life they only tried to mate with female red ducks. Which of the following inferences is supported by these results? Group of answer choices The mate preference of male red ducks is environmental. The mate preference of male red ducks is genetic. The mate preference of male red ducks is innate. The mate preference of male red ducks is learned.
The images below depict a female (left) and male (right) primate of the same species. Based on these images, would you agree that a high degree of sexual dimorphism is present? If so, what traits indicate this? Mark all that apply. Group of answer choices Yes, a high degree of sexual dimorphism. No sexual dimorphism - these would be considered an example of sexual monomorphism. Male has much larger canines. Male has a sagittal crest Male is much larger in overall size
Which of the following statements about genetic fitness and/or selection is false? Group of answer choices Individuals with low fitness have greater selection coefficients Fitness involves both relative viability and reproductive success Individuals with high fitness have greater selection coefficients Selection against recessive alleles tends to be slower overall than dominant alleles because of the survival in heterozygotes
The graph below shows values for body size in parents and offspring. The data shown are consistent with which of the following situations. ANSWER CHOICES A. variation in body size is completely due to variation in the environment (heritability is 0) B. most of the variation in body size is due to variation in the environment but there is a small effect of genes (heritability is around 0.2) C. variation in body size is completely due to variation in genes (heritability is 1.0) D. most of the variation in body size is due to variation in genes but there is some effect of the environment (heritability is about 0.8)
There are two color morphs in boomer foxes (not a real species), red and gray. Both tend to have a single litter of 4 pups, and there is little difference in pup mortality or reproductive success between the two morphs. Red morphs tend to have their litter in their second year, and most die before 5 years old. Gray morphs tend to have their litter in their third year and most live to 10 years old. Given this information which of the following statements below is correct? Group of answer choices Gray morphs and red morphs have same relative fitness Given that the gray morphs live twice as long as the red morphs their fitness is greater Since red morphs reproduce first their fitness is greater than gray morphs Since gray morphs delay reproduction their pups are fatter
Assume you are studying a species of slug where the eggs are fertilized and transferred to the male. As a result the male is not able to increase reproductive success by mating with multiple partners. Therefore which of the following about sexual selection in this species is not true? Females are more likely to develop traits that signal genetic quality to males. Females will be able to increase reproductive success with increased mating partners. Sexual selection in males will lead them to be choosy with what females they mate with. Sexual selection in males will lead them to mate indiscriminately when they find a female.
How Can We Measure Allele Frequencies in Populations? In a population where the females have the allelic frequencies A = 0.35 and a = 0.65 and the frequencies for males are A = 0.1 and a = 0.9, how many generations will it take to reach HardyWeinberg equilibrium for both the allelic and the genotypic frequencies? Assume random mating and show the allelic and genotypic frequencies for each generation.

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	Certainty of paternity is low when egg laying and mating occur together, as in external fertilisation.
	Certainty of paternity is high in most species with internal fertilisation because the acts of mating and birth are separated by time.
	Certainty of paternity is low when males guard females they have mated.
	Paternal behaviour exists because it has been reinforced over generations by natural selection