Answer:
lethal
Explanation:
The genotype mm corresponds to normal length tails. On the other hand, the genotype MM corresponds to having highly abnormal brains as well as spinal cords .
Lethal alleles are the alleles which can cause death of organism. These alleles are usually result of the mutations in the genes which are essential for the growth or the development. Thus, Marble has genotype Mm and have one copy of dominant lethal allele as M corresponds to premature death.
Answer: Pulmonary veins
Explanation:
Highly oxygenated blood returning from the pulmonary capillaries in the lungs passes through a series of vessels that join together to form the pulmonary veins—the only post-natal veins in the body that carry highly oxygenated blood. The pulmonary veins conduct blood into the left atrium, which pumps the blood into the left ventricle, which in turn pumps oxygenated blood into the aorta and on to the many branches of the systemic circuit.
In this case, oxygen and nutrients exit the systemic capillaries to be used by the cells in their metabolic processes, and carbon dioxide and waste products will enter the blood.
I believe the answer is: Primary
For example, let's say take a look at normal employees at a company.
For most of them, the main reason they spend their time to do the job correctly is to obtain money/salary even though they have to spend their time being scolded by unlikable boss.
In the scenario above, we can say that money is the primary reinforcer for the target behavior
The Leakeys made one of the first discoveries that early hominids possibly originated in Tanzania, Africa not Asia (which what anthropology thought at first).
