Ascientist wants to prove that certain chemicals in cosmetics are likely to cause harm to developing fetuses, when used by a pregnant mother. what is the most likely limitation she will face in her scientific design?
a) limitations due to the time required to complete the experiment
b) limitations due to the system being too large to investigate thoroughly
c) limitations due to high expenses for equipment and supplies
d) limitations due to ethical concerns about experimental subjects

as soon as possible i am stuck

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

All eukaryotic cells contain small bodies called

Which of the following are not included as modern mammals that evolved during the eocene epoch? primates artiodactyls perissodactyls none of the above