What would be the optimum survival characteristics of various life forms?

It became a dominant feature, with survival characteristics.

Something that got geneti- cally coded with a real survival characteristic.

What we think of as 'Physical beauty' is almost certainly a tag for a complex of useful survival characteristics.

One with more greed than principle, or one with more survival characteristics.

Something that got genetically coded with a real survival characteristic.

But why," protested Hamilton, "do you assume that combativeness is a survival characteristic?

The shopkeeper started to mention another of its survival characteristics, then decided it had no bearing on the transaction.

So, as a result, they are losing survival characteristics.

Krim's job was to try to introduce genetic defects, or negative survival characteristics, into the Africans.