interbreed

If interbreeding is no longer possible, then they will be considered different species.

I do not think it is possible for our two species to interbreed.

It interbreeds with several other species found in its range.

It's pretty safe to say that would not be able to interbreed.

They were still close enough to the other palms to interbreed.

It is not known how much contact the three species had, or if they could interbreed.

On Earth, after a time, the two races could interbreed.

But they were sufficiently human that he could interbreed with them.

You can't tell me we can even interbreed with them.

These species will often interbreed with each other where two members of the group occur.

However, they are able to interbreed with other races, such as humans.

If possible, two or more separate lines are started, never allowing them to interbreed.

This is thought to be the first recorded case of interbreeding in the wild.

But he had also said that the two were closely linked because they could interbreed.

There are many factors that prevent any two populations from interbreeding.

Neither approach, he said, provided any indication of interbreeding between the two species.

At the same time, they never interbreed with others of their species that evolved on a different plant.

A population can be defined as a group of interbreeding individuals and their offspring.

The trick is to keep the strains from interbreeding in the garden.

He was a hybrid, they concluded, and the first strong physical evidence of interbreeding between the groups in Europe.

Another problem is that reptile-men and human stock now interbreed.

Interbreeding in the wild has been reported between many members including:

I thought the boundary between species was that they couldn't interbreed.

We are not talking about interbreeding (or crossbreeding) between two different species.

There is no pressure to compete or interbreed (two responses when resources are short).