Most gymnosperms are pollinated by wind, whereas most angiosperms are pollinated by ________

Fill in the blank(s) with correct word


animals

Biology & Microbiology

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How do gene duplication and exon shuffling lead to new genes?

What will be an ideal response?

Biology & Microbiology

Biological diversity is an index of the variety of living organisms in an ecosystem, and includes:a

species richness only. b. species richness, genetic diversity, and ecosystem diversity. c. species richness, biosphere diversity, and ecosystem diversity. d. population diversity and ecosystem diversity. e. genetic diversity only.

Biology & Microbiology

When a ________ enters a host cell, it loses the outermost protein layer and is then referred to by virologists as a double-layered particle (DLP).

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

In which example are the proximate cause and the ultimate cause of morphological evolution correctly matched?

A. Proximate: point mutations in protein coding genes affect protein function and structure, ultimate: chemical and physical configuration of a protein affect its function B. Proximate: cis-regulatory elements are found upstream of a gene; ultimate: cis regulation is required to activate a gene C. Proximate: natural selection causes morphology to differ among species, ultimate: natural selection prevents morphological variation within a species D. Proximate: changes in gene regulation lead to changes in morphology; ultimate: natural selection favors morphologies that work best in their environment E. Proximate: natural selection favors gene combinations that have high fitness in their environment; ultimate: genetic changes alter morphology and fitness

Biology & Microbiology