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Many Plant Species Are Hermaphroditic and Run the Risk of Self-Mating

question 45

Multiple Choice

Many plant species are hermaphroditic and run the risk of self-mating. Some species carry self-incompatibility alleles that can prevent this from occurring. If a pollen grain with self-incompatibility allele S₁ lands on a stigma that also carries the S₁ allele, the pollen will not germinate and fertilization does not occur. Thus, this mechanism not only prevents selfing, but also has the unfortunate effect of preventing mating with any other plant that carries the same allele. However, if the pollen lands on a stigma of a plant with a different allele, fertilization occurs. Imagine a population of plants in which the allele frequency of S₁ = 0.9 and the allele frequency of S₂ = 0.1. All other things being equal, individuals with the ____ allele will have higher fitness on average. This is an example of ______.

Describe primary types of visuals used in presentations and their communication purposes.

Grasp the principles of graphic design that enhance the quality of visual elements.

Differentiate between formal and informal visual balance and apply appropriate design strategies for organizational websites.

Recognize additional principles applicable to online content development beyond basic report writing.

Definitions:

Psychic Income

The non-material satisfaction or pleasure derived from an activity or possession, not measured in terms of money.

Psychic Cost

The mental or emotional strain and stress that can arise from making decisions or engaging in a transaction, not accounted for in traditional financial costs.

Per Capita GDP

A measure of the total output of a country divided by the number of people in the country, providing an average economic output per person.

Wear Out Allowance

A depreciation method that factors in the reduction of an asset's value due to physical wear and tear over time.