Can humans be split into races? | Ask A Biologist
2018年2月14日 · This helps show that human appearances are more varied than our genes. Individual traits (like skin color) or combinations of traits (like skin color and hair color) cannot reliably group people by race. Using images that show the wide variation in human appearance can help address this common misconception.
Insect and Human Similarities | Ask A Biologist
2016年1月12日 · Some organs are very different between humans and insects, like the heart. On the left is a human 4-chambered heart (just after a heart transplant) and on the right is the enlarged image of a long thin tube heart in a beetle. Human heart image by Vasily I. Kaleda; beetle heart by the Harrison lab. The human liver removes toxins from the body.
Human Animal Differences | Ask A Biologist
2017年5月12日 · So maybe there isn’t that much that makes us uniquely human. Maybe we need to pay more attention to what animals are doing, and try to view the world through their eyes. And, perhaps our ability to consider animal's feelings and hope for the well-being of these other amazing creatures is our best, and most uniquely human ability.
Dear Aliens - Podcast Episode 058 | Ask A Biologist
So it really does take quite a lot of thought because it's an exercise which requires creative thinking. It requires research, it could be historical, it could be scientific and to an extent philosophical. Because it asks you to consider the human race, what have we done, who are we, and what is this planet?
Science and Evolution of Sleep - Ask A Biologist
2017年6月21日 · Human Origins of Sleep. While scientists are still exploring why people need sleep in their daily life, we’ve come to gather a much more accurate picture of how human sleep patterns have developed over time. Humans evolved from a common ancestor with other apes, so to understand how human sleep occurs, we look to the sleep patterns of other apes.
When was fire discovered? | Ask A Biologist
2021年5月5日 · Every human culture on earth makes and uses fire. It has been our companion for a long, long time. In fact, humans have been using fire since before we were… well, human. Modern humans are the species Homo sapiens, but our ancestors called Homo erectus were cooking with fires before we even existed.
CRISPR Enhancement | Ask A Biologist
2019年3月14日 · A lot of people disagree about how to answer these questions about using gene editing for human enhancement. Enhancement does not refer to the process of gene editing itself, but to its results. Enhancement is when gene editing is used to give people traits that go beyond a typical human ability. Some enhancements could be fairly obvious.
Dear Aliens - Episode 058 - Ask A Biologist
I think if anyone's been to the cinema lately, there's a few films out there at the moment which imply ‑‑ Battle Los Angeles, I'm thinking of ‑‑ that imply that they would be very, very war‑like and that their interests would be not even in colonization, would just be in destruction of the human race so that they could take our resources.
How Is Your Sex Determined? | Ask A Biologist
A karyotype is a complete set of chromosomes from an organism or species. This is a human male karyotype. In the red box, you see the sex chromosomes. Click for more detail. The Y chromosome is short, and mostly has instructions needed for typical males. It has one specific part called the sex-determining region Y, or SRY.
How Does Your Body Fix a Cut? | Ask A Biologist
2015年2月21日 · How Your Body Repairs Cuts. After you get a paper cut, it's important that your body closes the cut (the wound) so you avoid getting an infection.