The relation of reproductive isolation related to the flowering plants that are associated with annual or perennial genotypes. Introduction: Adaptation of species is defined as the ability of a species to adjust according to their surroundings. These surroundings may include temperature, availability of resources , and other factors. The fittest species are able to survive in the environment.

Question

Clausen and colleagues proposed two hypotheses to explain this variation within a species: (1) There are genetic differences between populations of plants found at different elevations. (2) The species has developmental flexibility and can assume tall or short growth forms, depending on local abiotic factors. If you had seeds from yarrow plants found at low and high elevations, what experiments would you perform to test these hypotheses? Select the three experiments.

Answer 1

Question

Chapter 29, Problem 1ITD

Summary Introduction

To review:

The relation of reproductive isolation related to the flowering plants that are associated with annual or perennial genotypes.

Introduction:

Adaptation of species is defined as the ability of a species to adjust according to their surroundings. These surroundings may include temperature, availability of resources, and other factors. The fittest species are able to survive in the environment.

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Clausen and colleagues proposed two hypotheses to explain this variation within a species: (1) There are genetic differences between populations of plants found at different elevations. (2) The species has developmental flexibility and can assume tall or short growth forms, depending on local abiotic factors. If you had seeds from yarrow plants found at low and high elevations, what experiments would you perform to test these hypotheses? Select the three experiments.

In most plants the largest, longest-lived body is a diploid sporophyte. By one hypothesis, diploid dominance was favored because it allowed a greater level of genetic diversity. Suppose that a recessive mutation arises. It is mildly disadvantageous now, but it will be useful in some future environment. Explain why such a mutation would be more likely to persist in a fern than in a moss.

While conducting a plant diversity survey in a temperate rainforest in Washington state, you come across a number of individuals of a low-lying plant species. These plants spread over the surface of moist groun and have numerous small stems that have tiny leaflets. They have root-like structures but do NOT have roots. Back at the lab, tests indicate that the majority of the plant material is haploid. The plant you discovered is likely most closely related to -a moss. -complex streptophyte algae. -a daisy -a conifer -a lycophyte