Which of the following set of characteristics would best described a R-selected species (e.g. an elephant)? early reproduction with many, small offspring and short-lived O early reproduction with few, large offspring and short-lived O late reproduction with few, large offspring and long-lived Olate reproduction with many, small offspring and long-lived
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- A male peacock has a beautiful tail that may affect its ability to evade predators. This is an example of which evolutionary trade-off? Reproduction and growth Reproduction and survival Number and size of offspringWhich of the following sexual traits is LEAST likely to have evolved due to male-male competition for mates, also known as intraspecific sexual selection?a) Enlarged femurs that an insect uses to kick other malesb) Brushes on the tip of a dragonfly penis used to remove sperm of other malesc) Mate-guarding behavior of a warbler during the female’s fertile periodd) Elongated tails of the male swordtail fish used during courtshipWhich types of environments/conditions would favor sexual reproduction over asexualreproduction in a species? (select all that apply) Group of answer choices A species that is rapidly expanding into new environments. A species that has accumulated many deleterious mutations An environment that is stable and favorable An environment where a pathogen of a species is rapidly diversifying
- Is the following case study an r-strategist or a K-strategist? American toads practice explosive reproduction. During the first warm days in spring, both males and females migrate from forests and converge on ponds. Reproduction is quick, taking only a few days. Females lay hundreds of eggs in jelly-filled sacks along the sides of the pond or stream. As soon as the eggs are laid, males and females abruptly leave the pond. Offspring are left to develop, hatch, and grow on their own, maturing in about three months.Which of the following IS TRUE about sexual dimorphism (choose all that apply)? Group of answer choices it refers to morphological differences between the sexes it refers to the principles of selecting reproductive partners No answer text provided. in represents a form of intraspecific variationgive one species that is classified or exhibit the following: male to male combat show a photograph of it with its sexual traits (body stuctures, behavior, etc) and how these traits help their reproduction. explain
- Which of these outcomes are examples of reproductive isolation? Select all that apply. Individuals of different species are physically compatible and can engage in sex Hybrid individuals cannot produce offspring Hybrid individuals or their offspring have similar fitness to the original species Reproduction occurs at different times Mating occurs but fertilization does not occurLiving things that are well adapted to their environment survive and reproduce. Those that are well adapted don't survive and reproducer. An adaption is any characteristics that increase fitness,which is defined as the ability to survive and reproduce. What characteristics of the mice is an adaptation that increased their fitness?Determine whether the reproductive behavior is evolutionary stable or unstable: Cowbirds are nest parasites. The females sneak into other birds' nests and lay their eggs, often removing the host bird's eggs. The cowbird eggs tend to match those of the host's eggs, and often the host does not detect that the cowbird's eggs have replaced their own. The host birds raise the cowbird chicks to maturity.
- the area titled Genotype Relative Fitness. Notice that the default is for all three genotypes to be set at 1.0. This indicates that all three genotypes have the same effect on survival and reproduction. Change the Genotype Relative Fitness of the rr genotype to 0.6. This indicates that the rr genotype (white phenotype) has a strong disadvantage over the other type genotypes in terms of survival and reproduction. Start the simulation and let it run for 200 generations. http://virtualbiologylab.org/ModelsHTML5/PopGenFishbowl/PopGenFishbowl.html When you started the simulation, your initial alleles frequencies were: R = 0.5 r = 0.5 What are your allele frequencies after 200 generations of strong selection?an example of a reproductive isolating mechanism. The example can be real species or a made-up example, explaining if its a prezygotic or postzygotic mechanism and why.If two organisms mate, then it is guaranteed that one of the offspring will be more fit than either of the parents True False