The answer is B, Heterozygous genotype, Tt is a genotype as it is not the physical representation.
The phenotype would be tall as that's what it is physically represented as.
Do you have the answer choices ?
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate.
Answer:
B
Explanation:
because they belong to classe Echinoidea, phylum echonodermata
That would be called a angiosperm.
