Answer:
<em>Genes are one dimensional.</em>
Explanation:
The genes are made up of segments of DNA. The DNA has a three dimensional structure as coiling and super-coiling occurs in it to give it a three dimensional structure. But genes itself are one- dimensional. Genes are the hereditary molecules.
The genes makes particular proteins. Proteins also have three dimensional structure as they undergo coiling and super-coiling.
Answer:
b. Hiccupping is a vestigial reflex that suggests a common ancestry between humans and amphibians.
Explanation:
Hiccupping refers to an involuntary contraction of the diaphragm that usually occurs several times per minute. Some research has suggested that hiccuping is an evolutionary remnant of amphibian respiration. This is because the mechanism is remarkably similar to the way tadpoles gulp air and water across their gills. This would mean that hiccups exist due to an antecedent to modern lung respiration.
Both A, B, and C are found in the excretory system.
Myofibrils are in the muscle of the intestines, villi increase surface area of the intestine, and nephrons help to filter in the kidney. Osteoblasts are found in bone, so therefore is not part of the excretory system
Answer:
Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations. Artificial selection works the same way as natural selection, except that with natural selection it is nature, not human interference, that makes these decisions.
Explanation:
D) generals <span>similarities in appearance
</span>The traditional classification<span> does not accurately estimate the degree of relatedness between species.</span>
