Changes in age, nutrition, temperature, sun exposure and various other factors can cause our bodies to change the amounts or types of hormones we make. The genes for making melanin might turn on or off over a lifetime, causing your hair color to change.
- What type s of data would help you explain why these mice have different fur colors?
- How could this amino acid difference result in mice with different fur colors?
- What caused the difference in fur color in the rock pocket mice?
- What initially caused the difference in coat color within the rock pocket mouse population?
- How did the rock pocket mice fur color change?
- Why did the dark colored mice living on dark lava flows have white underbellies?
- How would Biologists explain how the mice on the lava flow evolved black fur?
- Which type of natural selection is responsible for the fur color change in rock pocket mouse?
- What type of trait is fur color in mice?
- What happens to rock pocket mice on dark lava?
What type s of data would help you explain why these mice have different fur colors?
The data show that a mouse's alleles for MC1R gene, which they inherit from their parents, affect their fur color. These data support the claim that differences in fur color can be passed from parents to offspring.
How could this amino acid difference result in mice with different fur colors?
b. How could this amino acid difference result in mice with different fur colors? Students' answers will vary. They may say that if the protein has a different amino acid, it will have a different shape or function differently, which may cause the fur to look different.
What caused the difference in fur color in the rock pocket mice?
The illustrations and short film show that there is natural variation of coat color in the population of rock pocket mice living on the lava flow. The short film explains that mutations can cause a change in coat color, and that these genetic changes are being passed on to offspring.
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What initially caused the difference in coat color within the rock pocket mouse population?
Although some variations may be due to random fluctuations (genetic drift), the variations in this case were most likely caused by sampling errors. In this case, the fur color frequencies were calculated from very small samples (less than 20 mice at each location).
How did the rock pocket mice fur color change?
In rock pocket mice, a mutation in the gene for fur color results in black fur instead of the brown fur found in mice without the mutation. This mutation causes the mice to be more visible in areas of scrub.
Why did the dark colored mice living on dark lava flows have white underbellies?
the top of their bodies, providing camouflage so predators won't see them. The mice's underbellies are white because there's so selective pressure for it to be dark; the predators come from above.
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How would Biologists explain how the mice on the lava flow evolved black fur?
(1) Biologists explain how the mice on the lava flow evolved black fur through evolution by natural selection. The elements that helped this process were variation, inheritance, differences in survival/reproduction, and adaptation.
Which type of natural selection is responsible for the fur color change in rock pocket mouse?
Example of natural selection Thus melanism in rock pocket mice is considered a fabulous example of adaptation by natural selection.
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What type of trait is fur color in mice?
The coat colors of mice are typical Mendelian traits, which have various colors such as white, black, yellow and agouti. The inheritance of mouse coat color is usually stated as an example only in teaching the knowledge of recessive lethal alleles.
What happens to rock pocket mice on dark lava?
[NARRATOR:] On the desert sands, the rock pocket mouse blends in perfectly, its light- colored fur concealing it from predators. But on dark lava, the same fur makes the mouse stand out, attracting the many creatures that see it as food. [DR. NACHMAN:] These mice are the Snickers bar of the desert.