Which of the following biomes spans the largest annual mean temperature range, but the narrowest mean precipitation range?

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#Question id: 23604

#General Aptitude

Introducing a man, a woman said, “He is the only son of the mother of my mother.” How is the woman related to the man?

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#Question id: 5740

#Unit 8. Inheritance Biology

Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of the resulting offspring undergo chromosome duplication resulting fertile plants. The fertile offspring are known as

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#Question id: 16091

#Unit 7. System Physiology – Animal

The most significant heat source in the body is:

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#Question id: 15149

#Unit 8. Inheritance Biology

In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.

Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, what will be the phenotype in F1 progeny?

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#Question id: 9602

#Unit 9. Diversity of Life Forms

The legless condition that is observed in several groups of extant reptiles is the result of