Biology 2nd Year CH # 24-27 + antonyms

A placental squirrel in North America resembles a marsupial squirrel in Australia. They are genetically and geographically separated. This is best explained by ___.

• convergent evolution

• divergent evolution

• spontaneous generation

• vestigial structures

Natural processes such as speciation and gradualism provide the genetic basis for_____.

• evolution

• spontaneous generation

• biogenesis

• sexual reproduction

Structures that have a similar evolutionary origin and structure but are adapted for different purposes, such as a bat wing and a human arm are called _____.

• embryological strucutres

• analogous structures

• homologous strucures

• homozygous structures

Natural selection can best be defined as _____.

• survuval of the biggest and strongest

• elimination of the smallest by the biggest

• survuval and reproduction of the organisms that occupy the largest area

• survival and reproduction of the organisms that are genetically best adapted to the environment.

What is the movement of genes into and out of a gene pool called?

• random mating

• nonrandom mating

• gene flow

• direct evolution

The founder of the modern evolution theory is considered to be _____.

• Darwin

• Oparin

• Gould

• Margulis

Which fact is the basis for using the fossil record as evidence that evolution has taken place?

• in undisturbed rock strata, the oldest fossils are found in deeper layers

• there are fossils of all life forms in rock layers

• all fossils formed at the same time

• fossils provide a complete record of human evolution

Which statement best describes the process of evolution?

• Populations can survive in different locations on earth
• Environmental conditions limit the number of species on Earth
• Populations grow when resources are abundant
• The traits of a species can change over time

Darwin theorized that individuals having an advantage due to their traits or abilities will be more likely to survive and reproduce.  This theory is known as

• evolution
• speciation
• adaptation
• natural selection

Darwin's book was called On the Origin of

• individuals
• natural selection
• species
• evolution