Why are human males considered to be partially homologous?Question:Question:Why are human males considered to be partially homologous?Answer and Explanation: An allosome or sex chromosome is a chromosome that differs from an ordinary autosome in form, size, and behavior.In humans, each cell ...
Learn about mammals, a group of vertebrate animals that includes humans. Discover the common characteristics that define mammals, such as having body hair, producing milk to feed infants, being warm-blooded animals, and having a backbone. Related...
While humans grow small and fine(细微的) hairs on much of their skin, it's much thicker on the top of the head. Scientists say the answers come down to evolution. Humans probably evolved without fur because they have more sweat glands(汗腺) than other mammals. Humans walk upright on two...
Okay, well, humans are endotherms.What does your body automatically do when it gets really cold?MALE STUDENT: Shiver?FEMALE PROFESSOR: Right, shivering.In fact, any muscle movement increases metabolism, the process that produces heat and keeps your body temperature up when your surroundings get co...
doi:10.1080/00140138808966797Taylor & Francis GroupErgonomics
Humans who get information only of blue and green are considered color-blind, and can’t distinguish between red and green colors. 【3】Mammals like deer are the tiger’s main prey, and their dichromatic vision means they don’t see tigers as orange — they see them as green. That makes...
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That's especially beneficial for small mammals in colder climates. And when an animal gets too hot, well, have you ever seen a dog cooling off by taking short, quick breaths? And humans, we sweat, of course, perspire, which also gets rid of body heat. These are automatic, physiological...
Describe why the pelvis bones of a four-legged animal such as a cat or pig are much less massive than those of humans. Why do children tend to have high-pitched voices, and why do males typically have lower voices than females do? (a...
Why are primates going extinct? Why do monkeys have nipples? Why are modern apes not considered ancestral to humans? Why do chimpanzees have large testicles? Why aren't apes evolving into humans? Why do lemurs have long tails? Why do gorillas and humans have bigger hands than orangutans?