it is a broad predictive model which is supported by lots of evidence. ☐ E) scientists should not bother trying to disprove it. Question 18 (2 points) Identify the true statements below. CHOOSE ALL CORRECT ANSWERS. Intrasexual selection is most pronounced in males in a population. Showy secondary sexual characteristics cannot be explained because they break all of the rules of natural selection. In most vertebrates, males court the females. Sexual selection can result in sexual dimorphism (marked differences between the sexes in secondary sexual characteristics that are not associated directly with survival). Question 19 (Mandatory) (2 points) Saved Which of the following are conditions of Hardy-Weinberg equilibrium? CHOOSE ALL THAT ARE CORRECT. There can be no sexual selection. There must not be any selective advantage to a particular phenotype.

In sexual reproduction, gametes that are large have the advantage of providing a good amount of resources for the developing offspring. Gametes that are small have the advantage of mobility. We call large gametes eggs and small gametes sperm. Medium-sized gametes neither have enough resources for the developing offspring nor they have the capacity of mobility and hence, are eliminated by natural selection. Which type of natural selection is this an example of? -stabilizing selection -sexual selection -directional selection -disruptive selection

which of thee following statement is false 1) the antagonistic pleiotropy hypothesis is used to explain why evolving to live longer is often beneficial to oneâ s fitness 2)Ribozyme is class of molecule that is made of RNAs (thus "ribo" in its name) and amino acids (thus "zyme" in its name). 3)In human population, males are in general larger than females. This observation can be seen as an example of sexual dimorphism.

If you wanted to test whether the allele frequencies remain constant in an experiment, which of the following would be a good null hypothesis?   Question 1 options:   The number of offspring of each type is the same for the parental generation and the 7th generation of fish.   There are differences between the number of dominant and recessive alleles in the parental generation compared to the 7th generation of fish.   There is no difference between the number of dominant and recessive alleles in the parental generation compared to the 7th generation of fish.   There is a difference between the parental generation numbers of offspring for each of the three genotypes and the observed numbers of offspring in the seventh generation for those groups

Would you expect sexual selection to increase or decrease adaptation of a population to its environment? Do the pleiotropic effects and good genes mechanism for the evolution of female preferences differ in their implications for adaptation to the environment?

Explain how sexual selection might lead to a)sexual dimorphism and b) members of one sex (usually male) having traits that do not enhance their survival

What is the selective factor, or selective environment, in the case of sexual selection, that allows individuals with some genotypes to leave more offspring than individuals of other genotypes? Choose the best answer from the available options. Group of answer choices A-Sickle-cell disease B- AIDS C-Human preference D-Malaria E-Female preference

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Hitchhikers thumb is a recessive trait. We'll use: H=non-hitchhikers thumb allele and h=hitchhikers thumb allele. Assumer people without hitchhiker's thumbs find people with hitchhiker's thumbs sexy and vice versa - (the Vive la diference theory-haha). If this preference leads to non-random mating in a population that starts out in Hardy-Weinberg equilibrium, and no evolutionary forces act on the population, what will happen to the frequency of people with hitchhiker's thumbs in the next generation? Hint: this is a bit tricky to figure out. Consider all the possible genotypes and who each would mate with if they only mate with individuals with different phenotypes. Then think what that would do to the phenotype frequency over time. O The frequency of people with hitchhikers thumbs will decrease in the next generation. O The frequency of people with hitchhikers thumbs will increase in the next generation. O It will stay the same. (Since there are no forces.)

This figure represents one of the methods to determine if a characteristic, in this case the size of testes, is an adaptation. 200 100 Polygamous 10 Monogamous 1 1 10 100 200 Body weight (kg) EVOLUTION 4e, Figure 3.20 O 2017 Sinauer Associates, Inc. i) Why was body weight included in the data? What are the overall results? ii) Explain why the results may or may not indicate if the size of testes may be an adaptation. Testes weight (g)