Answer:
Horses
Explanation:
Between the mouth and stomach of all mammals, there is a tube called the esophagus. When the esophagus enters the stomach, it is surrounded by a muscle which allows all mammals to keep food inside, but if necessary, it relaxes to return the food as rumination (in the case of cows) or as vomit (for example in dogs, cats, humans); but on the horse that muscle is so strong that it is impossible for food to return, so they can’t vomit, and they cannot burp either.
For horses, having that muscle so developed is a great inconvenience, since vomiting is a defense system of the body that seeks to eliminate something that is not in good condition in the stomach.
The complementary DNA sequence for CTG GAA CTA is GAC CTT GAT. This is explained by the default base pairing of adenine (A) to thymine (T) and guanine (G) to cytosine (C) in double stranded DNA. This base paring is significant in DNA replication as well as in transcription of DNA but with the thymine (T) replaced by uracil (U) in RNA.
<u>Answer</u>: A) They have been geographically isolated from each other for a longer time.
<u>Explanation</u>: An isthmus is defined as a narrow strip of land that separates two bodies of water as well as connecting two larger landmasses at the same time. Thus, an isthmus if an efficient physical barrier that has separated an original shrimp species. This has resulted in the extant deep-water shrimp species through the evolutionary process known as allopatric speciation.
The age of an isthmus is in the range of at least two million years. Thus, the two deep-water shrimp species have been separated from each other for a very long time.
