Science

How does a dark mouse appear in a population of light mice?


How does a dark mouse appear in a population of light mice? Why did dark-colored rock pocket mice first appear in a population of light-colored rock pocket mice? They have a genetic mutation that affects their fur color. They have a genetic mutation that affects their fur color. You just studied 28 terms!

What causes a black mouse variation to appear in a light mouse population? NACHMAN:] When a black mouse appears in a light population of mice, that is usually going to be due to a new mutation. And those are random and rare events. [NARRATOR:] To fully understand the pocket mouse transformation, Nachman moves from the lava to the lab.

Why did dark colored rock pocket mice first appear in a population of light colored rock pocket mice they have a genetic mutation that affects their fur color there is dark lava rock in the area where they live individuals change color? The dark coloration in the rock pocket mouse did not arise because there was a lava flow. Rather, a random mutation proved adaptive to the mice living in areas of dark- colored volcanic rock.

Why are some mice light and some dark? Why were some mice light colored and some mice dark colored? Light colored pocket mice were at an advantage because they can hide easier from predators. Dark colored mice on the other hand were at a disadvantage because they were easily exposed to these visual predators.

How does a dark mouse appear in a population of light mice? – Related Questions

What caused the initial appearance of the dark colored pocket mouse in the population of pocket mice living on this rock formation?

Mutations in the Mc1r gene are responsible for the appearance of dark fur color in this particular population of rock pocket mice. In rock pocket mice, several genes code for fur color.

What process caused a black mouse to originally appear in the population?

Why did dark-colored rock pocket mice first appear in a population of light-colored rock pocket mice? They have a genetic mutation that affects their fur color. They have a genetic mutation that affects their fur color.

Why do dark rock pocket mice still have a white under belly?

Why do dark-colored rock pocket mice on dark lava flows have white bellies? There is no selection for dark bellies by visual predators. There is a reproductive advantage to having a dark belly. White bellies are an important part of camouflage.

How many years would it take for the mouse population to become 95% dark if there was a 5% competitive advantage to having a dark coat color?

If dark-colored mice had a competitive advantage of 5%, it would take more than 1,000 years for 95% of the population to have black fur. If dark-colored mice had a competitive advantage of 10%, it would take more than 1,000 years for 95% of the population to have black fur.

How do you get a population of dark-colored mice?

The dark-colored mice arose in the population at location A by random mutation. The phenotype did not become more common because it did not afford a selective advantage to the mice.

What does Dr Carol mean when he says while mutation is random natural selection is not?

What does Dr. Carroll mean when he says “while mutation is random, natural selection is not”? -natural selection can favor some mutations and not others. – selection can change depending on environment. -mutations for advantageous traits are more likely to be passed on to next generation.

What gene controls the color of the mice?

The Agouti gene in mice controls hair color and is under the control of a developmentally regulated hair cycle-specific promoter in exon 2. As a result, the gene switched ON at a specific time during hair follicle cell development to produce an agouti coat with a yellow stripe in otherwise dark hair [162].

What are the predators of rock pocket mice?

The sidewinder (Crotalus cerastes), also known as the horned rattlesnake, competes for a tasty bite of mouse with the common barn owl (Tyto alba) and great horned owl (Bubo virginianus), all of which are major predators of pocket mice. Some flesh-eating mammals also prey on them sometimes — think weasels and coyotes.

What animals prey on the rock pocket mouse?

The Rock Pocket Mouse. Who eats the Rock Pocket Mouse? Foxes, Coyotes, Rattle snakes, Owls, and Hawks.

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.

How does the population of pocket mice evolve between month 1 and month 3?

The population of pocket mice evolved due to natural selection. Explanation: Natural selection is the natural phenomenon where a group of species fittest to the environment survives and the other group which is not able to cope with change will die and go extinct.

Why does a rock pocket mouse color influences its overall fitness?

An ideal coat colour like that of a rock pocket mouse will help it to camouflage with rocks and hence help it to escape from predators. As a result, the mouse will be able to live and reproduce which depicts there overall fitness for the environment.

Why are mice different colors?

Summary: Scientists have shown that changes in coat color in mice are the result not of a single mutation, but many separate mutations, all within a single gene.

Which mice survived better on the lava flow explain?

The video suggests that on the dark lava flows, dark- colored rock pocket mice are more numerous than light-colored mice. A survival advantage of 1% for dark rock pocket mice on a dark background, starting at 1% of the population, would result in 95% of the mice having dark fur in 1000 years (6:18).

How often will a black mouse be born to Sandy parents?

How often will a black mouse be born to sandy parents? Once every 1,000 years 11.

What adaptation does the rock pocket mouse have for living over desert sand and gravel?

Over desert sand and gravel, It has the MC1R mutation, it causes a dark coloration which camouflages them at night and over the lava.

Which of the colors light and dark is good or bad for the pocket mouse?

Dark color is an advantage of dark-colored mice over light colored ones at the dark rocks. Because of the dark color, the mice are less visible for predators, so they have better chances for survival. On the other hand light colored mice live at sandy landscape, so they have better chances with the light colored fur.

When dark-colored fur colored fur gives mice a 1% competitive advantage & 1% of the population begins with dark fur in about 1000 years 95% of the population will have dark fur which is true?

Answer: b. If dark-colored rock pocket mice had a competitive advantage of 0.1%, it would take more than 1000 years for 95% of the population to have dark fur.

What percentage of mice in the population are homozygous dominant dark colored mice?

If the population is at Hardy-Weinberg equilibrium, what percentage of mice in the population are homozygous dominant, dark-colored mice? p2 = 0.04 or 4% Explanation: q² = 640/1000 = 0.64, so q=0.8.

What is the tan rock pocket mouse protected by?

[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.

Why does color affect a pocket mouses ability to survive?

How does colour influence overall fitness? advantage over light-colored mice in that environment. • Over time, dark-colored mice became more common at location B because more of their offspring survived toreproduce and pass on their genes, including the gene for fur color.

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