Vhich one of the following would be considered an example of sexual selection? Similar death rates due to disease in both sexes of a species The presence of both male and female reproductive structures within each individual of a specie Longer tailed males of a bird species mating more frequently on average than shorter tailed mal the same species Higher offspring survival in individuals homozygous for one type of allele compared to individua homozygous for a different allele at the same locus The ability of a species to utilize either asexual or sexual reproduction

Vhich one of the following would be considered an example of sexual selection? Similar death rates due to disease in both sexes of a species The presence of both male and female reproductive structures within each individual of a specie Longer tailed males of a bird species mating more frequently on average than shorter tailed mal the same species Higher offspring survival in individuals homozygous for one type of allele compared to individua homozygous for a different allele at the same locus The ability of a species to utilize either asexual or sexual reproduction

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 2CT

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Which of the following is NOT an example of sexual selection in the wild? * Peacocks showing off bright feathers to attract the peahens. Newts camouflaging in their environment so predators can't see them. Frogs singing loud songs to attract a mate. Rams butting heads and fighting to gain access to the females. INTL O 4:32 novo N42 Touch 4. %23 24 & backspace 4. 7 8 e r y ab f k enter shift C V alt ctrl alt
Sometimes gene flow between populations can have negative effects, with one population receiving genes of lower fitness from another population. Which of the following below is a good case example of this observation? O Tibetian highland people interbreeding with lowland people producing children of intermediate hemoglobin proteins OInterbreeding of Texas and Florida Panthers have greater survivorship than inbred Florida Panthers O Male Townshend Warblers out compete male Hermt Warblers and mate with female Hermit Warblers O Wild steelhead interbreeding with captive steelhead produced offspring with lower relative fitness
Imagine that you are a conservation biologist responsible for the well-being of a bufello herd consistingof 100 mature males and 100 mature females. In this herd, there is no appreciable mutation, there isno migration in or out, and there is no selection. At the Fuzzy gene locus, there are two alleles, G and E.Homozygous G individuals have fuzzy fur, homozygous E individuals have rough fur, and heterozygoteshave shaggy fur. Suppose you survey the herd and find that there are 44 fuzzy individuals, 72 shaggyindividuals, and 84 rough individuals.a)What is the size of the population?b)Do the alleles have a simple dominance relationship? Describe.c)What are the frequencies of the two alleles?d)Is the population in Hardy-Weinberg equilibrium?If not, how do you know, and what might be the cause?
Imagine that you are a conservation biologist responsible for the well-being of a bufello herd consistingof 100 mature males and 100 mature females. In this herd, there is no appreciable mutation, there isno migration in or out, and there is no selection. At the Fuzzy gene locus, there are two alleles, G and E.Homozygous G individuals have fuzzy fur, homozygous E individuals have rough fur, and heterozygoteshave shaggy fur. Suppose you survey the herd and find that there are 44 fuzzy individuals, 72 shaggyindividuals, and 84 rough individuals. Suppose you watch the buffalo and discover that while all the females breed, a small number of males(10) establish breeding harems, while the other males do not breed.a) What is the effective population size of this herd? That is, what size "ideal" population ofbalanced sex ratio would have genetics similar to this population?b)How does the effective population size compare to the actual population size?c) Under Hardy-Weinberg equilibrium, what…
ed to court femaigs and to defend tertory What kind of traits result from Competition Tor mates Sexually selected traits lin most species males can potentially have a huge number of offspring, but in order to realize even a fraction of their reproductive potential, they have to compete with other males (because the number of female eggs is a limiting factor, and because females evolved to be picky). Omaments on males and structures used to compete for mstes (antlers) selective pressure on males from competition with other males over females? - Behaviors such as bower construction, that are -Energeticaty expensive --Ridoulously conspiouous -Am lkely to reduce chances ofsurvival Why do males from very distant species have similar traits? Competition is costly Sexuaily selected troits Male dung beetiehorms develop at the Expense of eye site Sexual selection helps explain phenomena that do not make evolutionarysense in the context of dealing with other aspeets of the environment • Climate…
Ecalogical seleation Sexual selection What is ecological selection? How is it different from sexual selention torsurviva - Selection by the opposite sex - pormpetitive ad vantage Competition within males females predator avoidanoe selection? What kinds of traits result from ecological selection? Erirae Constraints on adaptive pertecton (optmali Why doesn't natural selection produce optimally adapted organisms? Oren ldaa NOT cop Adigsdon re om civep eb he numet n ognawihrntruclure and e . r e e Tw u n Ecological selection oeed .ha o hore cs Scanned vwith CamScanner
In a population of lizards, color is genetically determined. The current population has two two phenotypes: blue and yellow. Which of the following scenarios could result in evolution by migration? O A disease indiscriminately reduces the population by 90%. Birds are better able to see and therefor prey on blue lizards The population is joined by individuals from a nearby population that has an allele for a red phenotype. Females preferentially mate with individuals exhibiting the blue phenotype.
What describes the phenotypic plasticity of an organism best? O the degree of which individuals can change over time by altering their genotype O the effect of variable environment on the genotype of an organism O the variation of the target phenotype for a given genotype in different environments O the change of a phenotype due to ingestion of detrimental plastic material (as for instance plastic straws by sea turtles). O the degree of which a given genotype is adapted to a particular environment
If the methuselah gene overall has lower reproductive success, why does it persist in many wild populations? there is mutation selection balance it is beneficial in warm environments there is heterozygous advantage O it is harmful in cold environments
A group of 50 men and 50 women establish a colony ona remote island. After 50 generations of random mating,how frequent would a recessive trait be if it were at afrequency of 1/500 back on the mainland? The population remains the same size over the 50 generations, andthe trait has no effect on fitness.
In most species, which sex is more likely to be doing the "selecting" in sexual selection? * Males Females Sign out US I 4:06 Lenovo N42 Touch DI 96 & 4 5 6 7 8 backspace e d f k enter C V in m shift alt ctrl
Some people can taste the bitter compound phenylthiocarbamide while others cannot. This trait isgoverned by a single autosomal gene; the allele fortasting is completely dominant with respect to the allele for nontasting. Among 1707 Hawaiians tested forthe ability to taste, 1326 tasters were found. Assumingthat the population is at Hardy-Weinberg equilibriumfor this gene and that mating is purely random:a. What are the allele frequencies for the tasting alleleT [= (p)] and for the nontasting allele t [= (q)]?b. What are the genotype frequencies in the population?c. Of all the matings in the population, what proportion will be between two nontasters?d. Of all the matings in the population, what proportion will be between a taster and a nontaster?e. Of all the matings in the population, what proportion will be between a taster male and a nontasterfemale?f. What proportion of all of the progeny produced byall matings between a taster male and a nontasterfemale will be nontasters?g. Of all…