EBK BIOLOGY
5th Edition
ISBN: 8220100667978
Author: Maier
Publisher: PEARSON
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Chapter 12, Problem 2LTB
Summary Introduction
To analyze:
The presence of less diversity in humans represents that they are recently evolved species.
Introduction:
The genetic diversity within the species can be defined as the differences in the genetic sequence within the species. It is observed that, in the course of evolution, species representing more diversity are older ones or surviving from a long period of time.
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All genetic differences between all the individuals of all the different species are a
result of
O a) mutations
O b) the need for new traits
O C) None of the other answers is correct.
O d) differences in the rate of translation
e) differences in the rate of transcription
a) Based on this tree is the chicken, mouse, human, or hamster most closely related to the bat?
b) Which of the following statements is NOT true?
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A species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring. Evolution is an important mechanism in the formation of new species. The evolution of a new species requires several components including all, BUT
A) Evolution of a new species requires a long time.
B) Evolution of a new species requires the need for a genetic change.
C) Evolution of a new species requires a separation that prevents interbreeding.
D) Evolution of a new species requires mutations that produce new genetic traits.
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- What do all of the species in this cladogram have in common? A) they are all in the Claude archea B) none of them will ever evolve anymore C) they all have a common line of ancestry D) each of them has opposable thumbs and furarrow_forwardWhat is evolutionary history of a species called?arrow_forwardWhat is the phylogenetic definition of a species? A) A group of individuals that can breed and produce viable offspring B) A group of interbreeding individuals that share the same environment C) A group of individuals that share a common ancestorarrow_forward
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- Why are humans genetically less variable than penguins?arrow_forwardAccording to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) variation exists because different individuals will have different access to food and other resources B) individuals will vary depending on geography and climate C) variation exists because not all genes will be affected D) variation among individuals may arise as a result of mutations in the genetic codearrow_forwardAccording to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) individuals will vary depending on geography and climate B) variation exists because not all genes will be expressed C) variation among individuals may arise as a result of mutations in the genetic code D) variation exists because different individuals will have different access to food and other resourcesarrow_forward
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