Name the type of mutation below: Orignial DNA: AATCCGC
Mutation DNA: AACCCGC

A. substitution
B. frameshift
C. addition
D. deletion

please help

Did you know that a blue wales tongue weighs more than an elephant?

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass