The 23 pair of chromosomes that differ in males and females are called what?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

How does food concentration affect yeast activity