How Do You Define A Species

[Genetics Lab Format] When you looked at pictures of the lemurs, you saw as many as seven different looking varieties (phenotypes). After looking at the pictures of the mating pairs, you narrowed it down to 5. Next, you saw that most of them can mate with one another to produce fertile offspring - but two of them couldn't interbreed. Now it's time to look at their chromosomes shed further light on their differences.

Look at each slide under the microscope and count the number of chromosomes you see.

* E. f. fulvus -60 (30 pairs) * E. f. rufus - 60 * E. f. sanfordi - 60 * E. f. albifirons - 60 * E. f. albocollaris - 48 * E. f. collaris- 50

Click here to see again which can interbreed to produce fertile offspring.