Biology Chapter 16

discovered the shape of the DNA molecule.

• Reginald Punnett

• Francis Crick and James Watson

• Gregor Mendel

• Robbert Goddard

Genetics is the study of how traits are inherited.

• True

• False

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The arrangement of genes within an organism is called its __________

• traits

• genotype

• phenotype

• chromosomes

The physical appearance of an organism is called its phenotype.

• False

• True

Choose all that apply: Through his experiments and observations, Mendel concluded that:

• traits are inherited in pairs he called factors

• offspring got one factor from each parent

• DNA is made up of 4 molecules called bases

• traits can be hidden in one generation but reappear in following generations

• Each cell of an organism contains the entire genetic code of the organism

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When the last know member of a species dies, the species is considered __________.

• native

• extinct

• invasive

• endangered

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When the population of a species is so small that the species may soon become extinct, it becomes __________

• native

• extinct

• invasive

• endangered

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Which of the following is a key concept in Chapter 16 of Biology related to evolution?

• Natural selection

• Photosynthesis

• Cell division

• Genetic drift

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In the context of Biology Chapter 16, what is the primary mechanism by which species adapt to their environment?

• Mutation

• Natural selection

• Genetic engineering

• Cloning

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Which experiment is commonly associated with the study of natural selection in Biology Chapter 16?

• Mendel's pea plant experiment

• Darwin's finches

• Watson and Crick's DNA model

• Pasteur's swan neck flask experiment

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