Answer: Different chambers of the heart perform different functions.
Explanation:
The human heart has four chambers the two atria as well as two ventricles. The function of the lower chambers of the heart is to pump out blood. The atria or upper chambers receive blood. The right atrium obtains blood from the superior vena cava then the blood moves towards the right ventricle where the deoxygenated blood is pumped out to the lungs. From the left ventricles the blood is pumped to all the parts of the body.
Multiplication
Rapid growth
So,
The allele for tall is dominant, represented by T. If a genotype is heterozygous, it has one allele each from the dominant and recessive alleles. The recessive allele is represented by t. So a tall plant with a heterozygous genotype has a genotype of Tt.
The correct option is B.
All cells come from pre-existing cells
The correct answer among all the other choices is B. Lactobacillus. This option has prokaryotic cells and not the other choices. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.