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- QUESTION 39 Why does sexual selection typically act more strongly on males than females? a. Males typically participate in more parental care than females b. Females invest substantially more energy than males in gametes c. Females are likely to combat each other for mates d. Male limitations to reproductive success is gamete productionQUESTION 25 In red-collared widowbirds, females establish more nests in territories of long-tailed males versus those of short-tailed males. This pattern illustrates the process of: a. Male competition b. Female choice c. Intrasexual selection d. Male-male combatQUESTION 18 Describe: Population aging and increased longevity are creating more multi- and intergenerational families in the U.S. Give two examples of ways in which family structure and family roles are changing because of these changes.
- Monozygotic twins: Question 2 options: a) Share 50% of their genetic material and if one twin has schizophrenia the risk of the other having the illness if 40-50% b) Share 100% of their genetic material and if one twin has schizophrenia, the risk of the other having schizophrenia is 10-15% c) Share 100% of their genetic material and if one twin has schizophrenia, the risk of the other having schizophrenia is 40-50% d) Share 50% of their genetic material and if one twin has schizophrenia the risk of the other having the illness is 10-15%Question 18 When fitness is lower at both extremes of phenotypic variation for a trait (e.g., the very largest and very smallest beaks in a bird population) than for the median value in a population, the predominant evolutionary force at work is called Group of answer choices Only 1 correct answer phenotypic selection stabilizing selection directional selection phenotypic choiceQUESTION 23 Allele frequencies for eye color in a population of hippogriffs is p=0.73. How many individuals would you expect to be heterozygous in a population 150? (Assume HWE)
- QUESTION 19 People who specifically study the growth patterns and socioeconomic characteristics of human populations are called ___. a. demographers b. crytographers c. geographers d. environmentalists e. ecologistsQuestion 2. A widow's peak hairline is a dominant trait and a straight hairline is a recessive trait. What will be the genotypes and phenotypes of children of a homozygous dominant parent and a heterozygous parent? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Children-c) Phenotypes of children-QUESTION 35 You are conducting a QTL analysis to better understand monkey flower color and shape. To begin you start with breeding a plant that produces a long white tubular flower with purple flat flower. You continue your breeding for many generations. Which of the following is something you most likely observe? a. Variation in flowers your F2 population far exceeded the parental generation characteristics. b. The flower phenotypes did not correlate between siblings and between parent-offspring pairs. c. The variation in phenotypes is greater in the F2 population compared to the F1 population. d. Through selective breeding of the F1 individuals you could not recover the parental generation.
- Question.2. The black-backed jackal lives in the brushland of Africa, where monogamous pairs defend territories, hunt cooperatively, and share food. Frequently, offspring from the previous year's litter help rear their parents' new pups by regurgitating food for the lactating mother and for her young. It turns out that the number of surviving pups increases an average of 1.5 for every helper, compared to only 0.5 pups surviving when raised by the parents alone. A. The recruitment of previous offspring to help raise new pups is called: B. Why would young jackals forego their own breeding to help their mother raise new pups? Explain your answer in the context of Hamilton's Rule.C. Young jackals that help their parents raise new pups usually have increased reproductive success and/or direct fitness later in life. Provide two potential explanations for this effect.QUESTION 29 You are interested in selecting for increased brain size in Fisher cardinals. You’ve chosen three traits that seem to correlate with brain size. a. Calculate the heritability of each trait (H2 = Vg/Vp). Trait: Vg Vp H2 Skull size 1.36 6.08 ______ Ability to find food 5.33 5.98 ______ b. For which of the following traits would there be a stronger correlation between parent and offspring?Question 13 Natural selection occurs 1. when a new genetic variation occurs that allows individuals to have a reproductive and survival advantage 2. when a factor in the environment alters the genetic information in DNA of all members of a species 3. when a small number of individuals of a population break away and form a new population