Biology Spring Final Review

Which deals with the transmission of inherited traits from one generation to another?

• anatomy
• genetics
• ecology
• forensics

Traits controlled by genes on the X-chromosome are said to be

• sex-linked
• incompletely dominant
• homozygous
• mutagenic

Crossing-over most commonly results in

• genetic diversity
• a new species
• mutations
• a new number of chromosomes

The number of chromosomes can be studied by looking at a-

• karyotype
• pedigree chart
• genotype
• punnet square

Which best explains why children resemble their parents?

• They eat the same foods.
• They have similar DNA.
• They speak the same language.
• They have the same interests.

Which represents the genotype of a homozygous condition?

• Bb
• BC
• bb
• bc

In a fruit fly in which the diploid number of chromosomes is 8, the chromosome number in each gamete is normally

• 16
• 2
• 8
• 4

Darwin’s theory of evolution proposed

• extinct species are not related to living species.
• artificial variation results in some species being more fit to survive.
• species change over time by the more favorable traits being passed down to offspring.
• none of the above.

“Survival of the fittest” is another way of describing—

• Adaptive radiation
• Convergent evolution
• Diversity
• Natural Selection

In the past, what has occurred after every major extinction?

• The same organisms that went extinct go on to repopulate the world again.
• All organisms on the planet die and nothing repopulates the planet.
• New species of organisms are able to reproduce and populate the world.
• New and extinct organisms produce hybrid offspring creating new species.