What effect temperature has on Himalayan rabbits?
Based on your observations of Figure 1-1, conclude what effect temperature has on Himalayan rabbits. When the body of a Himalayan rabbit is cool, the rabbit's fur will grow in dark. When the rabbit's body is warm, the fur will grow in white.
Which variable will determine the coat color in Himalayan rabbits?
The coat colour of the Himalayan rabbit is determined 100% by the environment.
Why do you think the change in fur color of the Himalayan rabbits may be beneficial for their survival in the cold winter?
A rabbit's fur will lighten during the winter months. The less exposure a rabbit has to the sun, the lighter its fur will become. This will often be very noticeable as a rabbit's winter coat can be very thick. This is also a defense mechanism, so your rabbit can blend into its environment easier.
What does the example of the Himalayan rabbit display as far as gene expression?
For example, Himalayan rabbits carry the C gene, which is required for the development of pigments in the fur, skin, and eyes, and whose expression is regulated by temperature (Sturtevant, 1913). Specifically, the C gene is inactive above 35°C, and it is maximally active from 15°C to 25°C.
How is temperature important in an ecosystem?
Temperature is an important factor of an ecosystem. Temperature regulates the distribution of living organisms. Optimal temperature promotes diversity. Temperature also regulates the physical state of water.
Why do Himalayan rabbits have black ears?
Ice Turns Himalayan Rabbits Black Since the ears and feet of a Himalayan rabbit are colder they are generally black in color. In a classic genetics experiment a Himalayan is shaved and then an ice pack is placed on its back. The fur grows back black in the location that was cooled.
Which variables will determine the coat color of a Himalayan rabbit quizlet?
Which variable will determine the coat color in Himalayan rabbits? Both the genetics and the environment will determine the coat color.
What characteristic is common of both a genetic bottleneck and a founder effect?
What characteristic do a bottleneck and a founder effect have in common? Both involve a decrease in a population's genetic diversity.
How does climate change affect rabbits?
Now new research suggests that rabbits will be particularly hard hit as climatic changes alter their habitat over the coming decades. Rabbits, hares and pikas could become this century's new climate migrants – with up to two-thirds of species forced to relocate.
How do rabbits adapt winter?
How Do Rabbits Survive the Cold Winter? Rabbits typically do well in colder temperatures. Rabbits stop shedding their fur during the fall and grow a thick fur coat that keeps them warm in the winter. They are relatively comfortable in temperatures as low as 32 degrees.
How does temperature affect gene expression?
Generally, increasing temperature caused acceleration in development and the higher the temperature, the earlier the expression response of any specific targeted gene. In more detail, larval yolk utilization and growth rates increased, while yolk utilization efficiency decreased with increasing temperature.
How does the environment affect phenotypic expression?
Environment Can Impact Phenotype Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.
How does temperature change affect animals?
Rising temperatures lower many species survival rates due to changes that lead to less food, less successful reproduction, and interfering with the environment for native wildlife.
How does temperature affect the growth of animals?
Temperature and morphology: Temperature also affects the absolute size of an animal and the relative properties of various body parts (Bergman's rule). Birds and mammals, for example attain a greater body size when they are in cold regions than in warm regions, and colder regions harbour larger species.
How do Himalayan rabbits change color?
Ice Turns Himalayan Rabbits Black Since the ears and feet of a Himalayan rabbit are colder they are generally black in color. In a classic genetics experiment a Himalayan is shaved and then an ice pack is placed on its back. The fur grows back black in the location that was cooled.
Are Himalayan rabbits albino?
Genetics. Himalayan rabbits are known for having a double copy of the ch gene and a mutated albinism gene which causes the differences in eumelanin and pheomelanin production. The mutation is what creates the specific markings.
Which of the following is an important characteristic of the Galápagos Islands in the context of Darwin’s theory of evolution?
Which of the following is an important characteristic of the Galápagos Islands in the context of Darwin's theory of evolution? – The islands were too far from mainland South America for most terrestrial plants and animals to colonize.
What caused the bottleneck effect?
When an event causes a drastic decrease in a population, it can cause a type of genetic drift called a bottleneck effect. This can be caused by a natural disaster, like an earthquake or volcano eruption. Today, it is also often caused by humans due to over-hunting, deforestation, and pollution.
In what way does bottleneck effect affect genetic assortment?
Because genetic drift acts more quickly to reduce genetic variation in small populations, undergoing a bottleneck can reduce a population's genetic variation by a lot, even if the bottleneck doesn't last for very many generations.
How do rabbits adapt to their environment?
For one thing, the color of a rabbit's fur helps it to camouflage, or blend in, with its surroundings. For example, arctic rabbits are white to blend in with the snow, but they change to a reddish-brown color to blend in during the autumn season. In addition to acting as camouflage, rabbit fur serves as protection.
What environmental pressures do rabbits have?
Rabbits can cause damage by: overgrazing native and sown pastures, leading to loss of plant biodiversity and reduced crop yields. competing with native animals and domestic livestock for food and shelter, increasing grazing pressure and lowering the land's carrying capacity.
What do rabbits do during the winter?
During the winter, rabbits take in more wood-based food sources, such as tree bark, twigs, and conifer needles. Rabbits don't hibernate, so they dig holes or find warm, closed-in spaces, in hollow logs, rock piles, and brush piles.
Can rabbits survive in cold weather?
Although they may look small and fragile, rabbits are surprisingly well-adapted to cold temperatures. With appropriate husbandry, a healthy adult rabbit can be comfortable in temperatures down to 40 degrees Fahrenheit and can tolerate temperatures that are even lower if necessary.
How does temperature affect phenotype?
Increases in temperature (warm environments) showed a non-significant increase in phenotypic means and a marginally significant increase in phenotypic variability. Larger increases in temperature saw greater increases in phenotypic variability, but no increase in the mean phenotypic response.
How does temperature affect transcription and translation?
Consequently, as the temperature modulates the longer lasting step in transcription, it allows for large changes in the transcription interval with temperature.
How does the weather affect animals?
Some common ways weather affects animal behavior: Deep snow sends deer to coniferous forests with shared trail systems. Hawks are more likely to hunt in open fields during foggy conditions. Birds sing less on windy days. Summer heat moves animals to seek shade and become more nocturnal or crepuscular.
How do animals adapt to climate change?
Matthew Symonds. A study has found that animals are adapting to climate change by changing the shape of their bodies, to regulate their internal temperature. The research examined how certain animals have changed the size of their ears, tails, beaks and other appendages to deal with the heat.
How does low temperature affect animal production?
Unfavorable temperatures (too cold or too hot environments) lead to an increased heat production by the animal, i.e. there is more loss of energy, and in consequence less energy remains for production at the same level of energy intake, and the efficiency of energy utilization deteriorates.
How does temperature affect the distribution of animals?
Answer: Temperature is a factor that influences species distribution because organisms must either maintain a specific internal temperature or inhabit an environment that will keep the body within a temperature range that supports their metabolism.
Why do Himalayan rabbits turn black?
Ice Turns Himalayan Rabbits Black Since the ears and feet of a Himalayan rabbit are colder they are generally black in color. In a classic genetics experiment a Himalayan is shaved and then an ice pack is placed on its back. The fur grows back black in the location that was cooled.