Chapter 20: Q.12 (page 503)
The transfer of genes by a mechanism not involving asexual reproduction is called:
a. meiosis
b. web of life
c. horizontal gene transfer
d. gene fusion
Short Answer
Option : (c) horizontal gene transfer.
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Chapter 20: Q.12 (page 503)
The transfer of genes by a mechanism not involving asexual reproduction is called:
a. meiosis
b. web of life
c. horizontal gene transfer
d. gene fusion
Option : (c) horizontal gene transfer.
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Some organisms that appear very closely related on a phylogenetic tree may not actually be closely related. Why is this?
Particles that transfer genetic material from one species to another, especially in marine prokaryotes:
a. horizontal gene transfer
b. lateral gene transfer
c. genome fusion device
d. gene transfer agents
What do scientists in the field of systematics accomplish?
a. discover new fossil sites
b. organize and classify organisms
c. name new species
d. communicate among field biologists
What does the trunk of the classic phylogenetic tree represent?
a. single common ancestor
b. pool of ancestral organisms
c. new species
d. old species
Describe how aphids acquired the ability to change color.
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