Environments all over the world are changing as a result of global warming. Will this cause natural selection to occur? A. No.The environment is always changing. Global warming is nothing new. B. Yes, warmer temperatures will induce mutations that are favorable to survial in the new teperature regime C. No. The only change will be that species from hot environments will expand their ranges. D. Yes. Traits that help individuals produce more offspring in warmer environments will increase in frequency. E. Yes. Warmer temperatures will increase the rate of chemical reactions in poikilothemic species and thus natural selection will be enhanced.
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.
Environments all over the world are changing as a result of global warming. Will this cause natural selection to occur?
| A. |
No.The environment is always changing. Global warming is nothing new. |
|
| B. |
Yes, warmer temperatures will induce mutations that are favorable to survial in the new teperature regime |
|
| C. |
No. The only change will be that species from hot environments will expand their ranges. |
|
| D. |
Yes. Traits that help individuals produce more offspring in warmer environments will increase in frequency. |
|
| E. |
Yes. Warmer temperatures will increase the rate of |
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