Male call from population 1 Male call from population 2 Number of calls approached first Females...
3. Two populations of annelids (worms) live in distinct areas and on different soil types. Researchers are interested in whether the populations have acquired different types of reproductive isolation. Which method would be best to determine whether two populations exhibited gametic isolation? O Bring them into the lab. Observe pairs of a male from one population and a female from the other See whether the sperm from the males will fertilize eggs of the females of the other population. If...
NTRODUCTION Under nearly all circumstances, postzygotic reproductive isolation cannot evolve under the direct action of natural selection. Instead, postzygotic isolation evolves as a by-product of other genetic changes as proto-species diverge. In contrast, natural selection can directly act to enhance prezygotic reproductive isolation. Consider two species with overlapping ranges. If hybrids between the species are less fit than pure species individuals, females that mated with heterospecific males would be at a selective disadvantage, because their resulting offspring had low fitness....
1Female stalk-eyed flies prefer to mate with males that have longer eye stalks, and the average male eye stalk length is much longer than that of females. This is an example of _______ mutation macroevolution. disruptive selection sexual selection. 2 Several different species of small nocturnal primates called, bush babies live in the woodlands of Africa While several different species of bush babies often live in the same habitat they cannot interbreed because bush babies have genitalia that will only fit the genitalia of females belonging...
need help with this .. From the pages 571-587 attached below. 1a) Suppose a population of guppies was infected with a parasite. In that population a mutation results in a parasite resistant genotype that spreads through the population through natural selection. A subsequent mutation in the parasite results in a genotype that is unaffected by the newly evolved resistant guppy genotype. What is the name of the hypothesis that explains this host parasite “arms race”.? 1b) What is this name...