Describe the fact that they don\'t have legs, python snakes possess the remnants

ID: 84745 • Letter: D

Question

Describe the fact that they don't have legs, python snakes possess the remnants of hind limbs attached to their pelvic girdle. These remnants would be considered ___ structures. a. Analogous b. Vestigial c. Batesian d. Secondary Skunks belonging to one species live near skunks belonging to the species S. putorius. However, members of S. gracilize only mate in the summer, while members of the species S. putorius mate in the winter. Therefore these two skunk species do not interbreed. This is an example of: a. Habitat isolation b. Hybrid c. Temporal isolation d. Mechanical Isolation Suppose a large population of Zanzu birds lives in South America. One day, a dozen of these Zanzu birds migrate to an island off the coast their own population. This phenomenon is known as: a. The founder effect b. The bottleneck effect c. Random mating d. Immigration (Referring to the birds in the previous question) which zanzu bird population is more susceptible to the effects of genetic drift?. a. The large mainland population b. The small inland population

Explanation / Answer

Question 1

Answer : b. vestigial

Question 2

Answer : c. temporal isolation

Question 3

Answer : a. founder effect

Question4

Answer : b the small inland population

TEMPORAL ISOLATION

:Animals that breed at various times of the year won't produce offspring.

Western and eastern spotted skunk.-exhibit TEMPORAL ISOLATION

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the founder effect : it is the loss of hereditary variety that happens when another populace is built up by few people from a bigger populace. It was first described by by Ernst Mayr in 1942, utilizing existing hypothetical work by those, for example, Sewall Wright. Thus of the loss of hereditary variety, the new populace might be unmistakably unique, both genotypically and phenotypically, from the parent populace from which it is inferred. In extraordinary cases, the author impact is thought to prompt the speciation and resulting development of new species.The originator impact happens when a small group of migrants that is not hereditarily illustrative of the populace from which they came build up in another area. the new populace is frequently a little populace, so demonstrates expanded affectability to genetic drift,, an increment in inbreeding, and generally low hereditary variation.

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vestigial organ.

it is a rudimentary structure in people comparing to a practical structure or organ in ancestral animals.