**Zooplankton and Allele Frequency in Isolated Populations**Zooplankton (small animals that live suspended in the water) are sometimes isolated in small ponds caused by glaciers, called prairie potholes. Movement of zooplankton between these habitats is very limited. Because of the small size of zooplankton, each pothole can maintain a very large population. There are no known traits that females use to determine male quality when males are present, nor is there any obvious sign of male-male competition. When assaying the populations for genetic diversity, you find that all have the same alleles and no new alleles have appeared since these habitats were colonized. At this time, no known traits are under selection. If all of these things are true, then are these populations likely to exhibit changes in allele frequency in the immediate future?- ○ Yes, they will exhibit shifts in allele frequency in the next generation or two in random directions- ○ No, if these conditions continue the allelic frequencies will not change- ○ Yes, they will exhibit shifts in allele frequency with imminent declines in allelic richness- ○ It is impossible to guess at, let alone predict, how allelic frequencies will change, even if these conditions persist

Answered: Zooplankton (small animals that live…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

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**Zooplankton and Allele Frequency in Isolated Populations**

Zooplankton (small animals that live suspended in the water) are sometimes isolated in small ponds caused by glaciers, called prairie potholes. Movement of zooplankton between these habitats is very limited. Because of the small size of zooplankton, each pothole can maintain a very large population. There are no known traits that females use to determine male quality when males are present, nor is there any obvious sign of male-male competition. When assaying the populations for genetic diversity, you find that all have the same alleles and no new alleles have appeared since these habitats were colonized. At this time, no known traits are under selection. If all of these things are true, then are these populations likely to exhibit changes in allele frequency in the immediate future?

- ○ Yes, they will exhibit shifts in allele frequency in the next generation or two in random directions
- ○ No, if these conditions continue the allelic frequencies will not change
- ○ Yes, they will exhibit shifts in allele frequency with imminent declines in allelic richness
- ○ It is impossible to guess at, let alone predict, how allelic frequencies will change, even if these conditions persist

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Zooplankton - Zooplanktons are the type of organisms which live inside the water. These are heterotrophic planktons. These organisms feed on the plants that reside inside the water. The size of zooplanktons vary from microscopic to large organisms. Example - Jellyfish

Traits - Traits are the specific characteristics of the organisms. These traits are the results of the genotype of the organisms. The physical appearance of the genotype is called as phenotype. These physical characteristics which can be physically seen are called as Traits.

Allele frequency - Allele frequency is that type of frequency which determines that how a particular allele appears in the population. Example - T = Dominant allele for height, t = recessive allele for height.

Allelic richness - Allelic richness defines as the total number of alleles. Allelic richness determines the genetic diversity of the population.

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