How Are Two Different Species Most Likely to Evolve from One

question 32

Multiple Choice

How are two different species most likely to evolve from one ancestral species?

• A)sympatrically,by a point mutation affecting morphology or behavior
• B)sympatrically,due to extensive inbreeding
• C)allopatrically,due to extensive inbreeding
• D)allopatrically,after the ancestral species has split into two populations
• E)phylogenetically,due to heterozygote advantage in hybrids

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Definitions:

Periderm

The outer bark of woody stems and roots; composed of cork cells, cork cambium, and cork parenchyma, along with traces of primary tissues.

Mature Vessel Elements

Components of the xylem in plants that form part of a continuous tube through which water can move.

Sieve Tubes

Specialized structures in the phloem of vascular plants that facilitate the transport of sugars and other nutrients.

Companion Cells

Specialized cells in the phloem of plants that manage the functioning and maintenance of the nutrient-conducting sieve-tube elements.