The Difference Between Microevolution and Macroevolution Is That

question 74

Multiple Choice

The difference between microevolution and macroevolution is that

• A)macroevolution examines changes in frequency of alleles in a population, whereas microevolution focuses on speciation.
• B)microevolution focuses on changes in the gene pools of populations, whereas macroevolution focuses on changes that give rise to new species and groups of species.
• C)microevolution is applied to small organisms that undergo only asexual reproduction, whereas macroevolution applies to larger, multicellular organisms that undergo sexual reproduction.
• D)microevolution refers to changes that occur in organisms over millions of years, whereas macroevolution refers to physical changes that occur to Earth's surface over the same time period.

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Definitions:

Testosterone

A steroid hormone that plays a key role in the development of male reproductive tissues, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

Estrogens

A group of steroid hormones that promote the development and maintenance of female characteristics of the body.

23rd Chromosome

One of the pair of chromosomes responsible for determining the sex of an individual, with XX typically denoting female and XY typically denoting male.

Sex Chromosomes

The chromosomes (X and Y) responsible for determining the biological sex of an organism.