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- Is sexual selection or natural selection the driver for the differences between males and females? a. In the hollyhock weevil (Rhopalapion longirostre) the females a have much longer rostrum. The length of rostrum is correlated with offspring survival but not mating frequency. b. In the marine iguana species (Amblyrhynchus cristatus) on the islands near Ecuador the males often exceed expected size on a given island. Male size is correlated with survival and number of mating events.What does positive assortive mating mean? a. Individuals that are different for a certain trait are more likely to mate b. Individuals that are alike for a certain trait are less likely to mate c. Individuals that are alike for a certain trait are more likely to mate d. Any individuals may mate randomly Give typing answer with explanation and conclusionThe brightness of color in male Blue-footed boobies correlates with higher mating success. Why is the color of the feet considered an ‘honest signal’?
- A. In terms of the barriers in place that keep species separate, explain whether song recognition is a prezygotic barrier or a post-zygotic barrier. B. Explain which type of isolating mechanism this wouldbe once you determine the barrier type. C. Discuss why song would be a barrier to mating with another species and having the incorrect song might change your fitness potential.In the digger bee, some males engage in female defense polygyny, whereas other smaller males exhibit scramble competition polygyny. Describe these two mating systems and explain how they are maintained in male digger bee population.How would self-sacrifice of male redback spiders be an adaptive behaviour? Select one: a. When males meet a female and self-sacrifice, it activates enzymes that make his sperm more fit and able to fertilize more eggs. b. Males are able to mate with one female, then mate with another female nearby, before being devoured by the first female. C. Males only use self-sacrificing behaviour once they have mated with several females and have exhausted their sperm supplies. d. The chance of a male meeting more than one female is quite low; self-sacrifice maximizes mating time with and sperm transfer to any female the male finds.
- Which of the following is an example of a question about mechanism (not function)? A. What stimuli triggers a mother bird to feed her nestling? B. How does parental care benefit the mother's inclusive fitness? C. Why do some species have parental care but not others? D. Do mother birds get better at caring for their offspring over time?Female mimicry by males occurs in many species. For example, in the Broadley’s flat lizard (Platysaurus broadleyi), some males have the brown coloration of females while others are far more colorful (Whiting et al. 2009). Female mimics do secure some matings in the territories of their larger, more colorful rivals. Why are the bigger males (and those of the marine isopod Paracerceis sculpta) ever fooled into tolerating a female mimic? Why do female mimics occur in any species if the mating success of these individuals is lower than that of the bigger territorial males? Don't write from any online source..Why are polyandrous mating systems more rare than polygynous matings? a. Only males are capable of multiple rounds of reproduction within a single breeding season. b. Only females care for the young. c. Females usually experience more intrasexual selection pressure than males. d. Females usually devote more energy to offspring production and development.
- define interspecific competition. explain how insects reduce intraspecific competition between adults and offsrpings.Direct benefits derived by choosy females in mating include the following EXCEPT - A. Help in caring for young B. Nesting territories. C. Protection from injuries. D. Having more male offspring which be chosen as future mates.rences Belding's ground squirrels (Spermophilus beldingi) live in closely related groups. When they feed in the open, certain individuals (guard squirrels) watch for predators instead of feeding. The guard squirrels give an alarm call when a predator is sighted, allowing the rest of the group to run to safety. Researchers have noted that, because the alarm call draws attention to the guard, the guard is more likely to be caught by the predator and therefore has a lower survival rate in comparison with the other squirrels.Which of the following best explains the behavior of the guard squirrels? * anline la "eriods 1 and 2 iods MP1, Highschool hool MP3, MP4 The behavior of the guard squirrels increases the survival of cese relatives that share the genes of the guard squirrels. d Thu Fri Option Guard squirrels typically have recessive alleles, and by sacrificing themselves, they lessen the chance that recessive alleles will get passed on. The guard squirrels confuse the predator, lowering…