When an instruction for a variation of a trait is not shown in by the organism, but the organism carrys it and can pass it on to the next generations, these organisms are called . a
dominant
b
carriers
c
recessive
d
holders

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

When analyzing tree rings, what do scientists assume a thin ring indicates?