Which of the following is the most predictable outcome of increased ge ulations? ower average fitness in both populations igher average fitness in both populations ncreased genetic difference between the two populations ecreased genetic difference between the two populations creased genetic drift Mutation is the only evolutionary mechanism that the ultimate source of variation in natural populations oes little to change allele frequencies ecreases fitness more important in eukaryotes than in prokaryotes as no effect on genetic variation
Which of the following is the most predictable outcome of increased ge ulations? ower average fitness in both populations igher average fitness in both populations ncreased genetic difference between the two populations ecreased genetic difference between the two populations creased genetic drift Mutation is the only evolutionary mechanism that the ultimate source of variation in natural populations oes little to change allele frequencies ecreases fitness more important in eukaryotes than in prokaryotes as no effect on genetic variation
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
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Concept explainers
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
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Transcribed Image Text:-) Which of the following is the most predictable outcome of increased gene flow between two
pulations?
Lower average fitness in both populations
Higher average fitness in both populations
Increased genetic difference between the two populations
Decreased genetic difference between the two populations
Increased genetic drift
-) Mutation is the only evolutionary mechanism that
is the ultimate source of variation in natural populations
does little to change allele frequencies
decreases fitness
is more important in eukaryotes than in prokaryotes
has no effect on genetic variation
) Three populations of crickets look very similar, but the males have courtship songs that sound
ferent. What function would this difference in song likely serve if the populations came in contact?
A temporal reproductive isolating mechanism
A postzygotic isolating mechanism
A behavioral reproductive isolating mechanism
A gametic reproductive isolating mechanism
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