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Ch. 24 - The Origin of Species
Campbell - Campbell Biology 12th Edition
Urry12th EditionCampbell BiologyISBN: 9785794169850당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Urry 12th EditionCh. 24 - The Origin of Species문제 1
24장, 문제 1

The largest unit within which gene flow can readily occur is a
a. Population.
b. Species.
c. Genus.
d. Hybrid.

검증된 단계별 안내
1
Understand the concept of gene flow: Gene flow refers to the transfer of genetic material between populations of the same species, which can occur through various mechanisms such as migration or the movement of individuals.
Identify the biological hierarchy: In biological classification, the hierarchy from smallest to largest is species, genus, family, order, class, phylum, kingdom, and domain.
Consider the definition of a species: A species is a group of individuals that can interbreed and produce fertile offspring. This is the largest unit where gene flow can naturally and readily occur.
Differentiate between the options: A population is a group of individuals of the same species living in a specific area, a genus is a group of related species, and a hybrid is an offspring resulting from the cross-breeding of two different species.
Conclude that the largest unit within which gene flow can readily occur is a species, as it encompasses all populations of that species capable of interbreeding.

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주요 개념

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Gene Flow

Gene flow refers to the transfer of genetic material between populations or species, which can occur through various mechanisms such as migration or breeding. It is a crucial process for maintaining genetic diversity and can influence evolutionary changes within populations.
추천 영상:
가이드 코스
01:43
Gene Flow

Species

A species is the largest group within which gene flow can readily occur, as members of a species can interbreed and produce fertile offspring. This concept is central to understanding biological classification and the boundaries of genetic exchange.
추천 영상:
가이드 코스
03:24
Biological Species Concept

Population

A population is a group of individuals of the same species living in a specific area, capable of interbreeding. While gene flow can occur within populations, it is limited to the members of that population, making it a smaller unit compared to a species.
추천 영상:
02:58
The Human Population
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교과서 질문

Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. Which of the following pieces of evidence, if true, would be cause for this reclassification?

a. The two forms interbreed often in nature, and their offspring survive and reproduce well.

b. The two forms live in similar habitats and have similar food requirements.

c. The two forms have many genes in common.

d. The two forms are very similar in appearance.

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교과서 질문

Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elaborate courtship rituals. These rituals involve fighting other males and making stylized movements that attract females. What type of reproductive isolation does this represent?

a. Habitat isolation

b. Temporal isolation

c. Behavioral isolation

d. Gametic isolation

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교과서 질문

According to the punctuated equilibria model:

a. Given enough time, most existing species will branch gradually into new species.

b. Most new species accumulate their unique features relatively rapidly as they come into existence, then change little for the rest of their duration as a species.

c. Most evolution occurs in sympatric populations.

d. Speciation is usually due to a single mutation.

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