# Biology

posted by .

One family of mammals includes true horses (Equus), zebras (Hippotrigris and Dolichohippus), and donkeys and asses (Asinus). Zebroids are hybrid offspring of wild zebras and domesticated horses that were confined to the same pasture. The unnatural confinement breached the reproductive barriers between the two lineages. Those barriers have been in place since a divergence more than 3 million years ago. What does the breach say about the number of genetic changes required to attain reproductive isolation in nature?

## Similar Questions

1. ### computer sciece(Computation Theory)

Find the error in the following proof that all horses are the same color. CLAIM: In any set of h horses, all horses are the same color. PROOF: By induction on h. Basis: For h = 1. In any set containing just one horse, all horses clearly …
2. ### maths

A & B together have 132 horses. If 0.25 of the no. of A 's horses = 0.14285714285714.... of no. of B 's horses, how many horses each has?

A horse and a donkey can mate with each other. Their offspring,called a mule, is not fertile. Do horses and donkeys belong to the same species?
4. ### math

Researchers count 30 tagged zebras and 150 total zebras in an area of a game reserve. If researchers had previously tagged 80 total zebras at the game reserve, about how many total zebras live at the game reserve?
5. ### math

There are 16 animals on a farm 3/8 horses, 1/4 are donkeys and the rest are mules. How many horses,donkeys and mules are at the farm
6. ### mason

seven horses are entered in a race. If two horses are tied for first​ place, and there are no ties among the other five ​horses, in how many ways can the seven horses cross the finish​ line?
7. ### math

horses are entered in a race. If two horses are tied for first​ place, and there are no ties among the other five ​horses, in how many ways can the seven horses cross the finish​ line?
8. ### math

seven horses are entered in a race. If two horses are tied for first​ place, and there are no ties among the other five ​horses, in how many ways can the seven horses cross the finish​ line?
9. ### Math

The local zoo has 3 lions, 4 elephants, 2 giraffes, 5 monkeys, and 2 zebras. What is the ratios of zebras total animals. Answer: I counted the total number of animals which is 16 so I got 2 zebras to 16 animals or 2:16 or 2/16 Do I …
10. ### Math

The local zoo has 3 lions, 4 elephants, 2 giraffes, 5 monkeys, and 2 zebras. What is the ratio of zebras to total animals?

More Similar Questions