Answer:
you can google it online.
Explanation:
I have a answer hold on tho
Answer:
Heredity is when you "get" from they mom/dad to their childs.
mice have 20 sets of chromosomes, making 40 chromosomes in to in all,and none are the same form of allele
Explanation:
Answer;
D. controlled
An experiment in which only one variable is changed is a controlled experiment.
Explanation;
-A control experiment is an experiment where the researcher only changes one variable at a time in order to isolate the results.
In a controlled experiment, most conditions are constrained so that they do not change. One or two other conditions are then changed and measured by the experimenter. These are known as the independent variables.
For example; An experiment where all subjects involved in the experiment are treated exactly the same except for one deviation.