Respuesta :
The change most likely to favor this is Independent, unique mutations occurred in each population that rendered enhancers in the armor pathway useless, which were then favored by natural selection.
What is Natural Selection?
- Natural selection is the variation in individual survival and procreation brought on by phenotypic variances.
- The evolution of a population's heritable features across generations is a fundamental mechanism of evolution.
- By contrasting it with artificial selection, which in his opinion is intentional and natural selection is not, Charles Darwin popularized the phrase "natural selection."
- Every population of organisms contains variation. This happens in part because an organism's genome might experience random mutations, which its descendants may inherit. Individuals' genetics and environments interact throughout their lifetimes to produce different phenotypes.
- A genome's environment comprises the abiotic environment as well as the molecular biology of the cell, other cells, individuals, populations, and species.
- The population changes as a result of individuals with specific variants of the trait having a higher chance of surviving and procreating than those with other, less successful versions.
- Fecundity selection and sexual selection, which are now frequently included in natural selection, are other factors that affect reproductive success.
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Question:
I hope you are trying to ask the question below:
Imagine a scenario in which several lakes have been colonized by marine-origin sticklebacks. In each lake, body armor disappears over time. Which change most likely caused this?
a. Independent, unique mutations occurred in each population that rendered enhancers in the armor pathway useless, which were then favored by natural selection.
b. Each population had the exact same mutation in a protein coding gene that produces the armor, which increased in frequency by natural selection.
c. Novel trans-regulatory elements functioned to build new, armorless morphologies that increased in frequency because of gene flow from oceanic populations.
d. Lack of armor reduces fitness, so only genetic drift could cause the armorless condition to increase in frequency.
