Which of the following describes the focus of Mendel’s work in genetics?
a. inherited traits that appeared to be a blending of two genes
b. inherited traits with distinct, distinguishable patterns
c. inherited traits that were no longer recessive
d. inherited traits with only minor differences
b. inherited traits with distinct, distinguishable patterns
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An ommatidia is part of a:
A. single-lens eye. B. compound eye. C. eyecup. D. All of the answer options are correct.
Which of the following explains why Ginkgo biloba is often planted in public spaces?
a. Ginkgo biloba trees are resistant to air pollution. b. Male ginkgo biloba trees have a pleasant smell. c. Female ginkgo biloba trees produce attractive flowers. d. Ginkgo biloba trees require minimal water.
Hay fever that occurs when people are exposed to pollen involves an excess release of IgE, which binds to ________ and causes them to ________.
A) pollen : stimulate the release of histamine B) macrophages : destroy the pollen whose by-products stimulate histamine release C) T helper cells : stimulate the proliferation of cytotoxic T cells D) mast cells : degranulate, releasing histamine E) mast cells : stimulate the proliferation of cytotoxic T cells
Pest or weedy species are typically __________ and exhibit type __________ survivorship curves
a. r-selected; I b. r-selected; II c. r-selected; III d. K-selected; I e. K-selected; III