Reproductive isolation must happen
Answer:
<h3>As per the hints most applicable is a check that chromosome replication has been successfully completed this is because chromosome replication does not occur until after G1. Actually this checkpoint is G2.</h3>
Explanation:
During G2 phase cell undergoes rapid growth in size as well as protein synthesis takes place. During this process cell basically prepare itself for mitosis.
Answer: 1. Lipophobic
2.Thyroid
3.lipophilic
Explanation:
Chemical messengers can be classified by their chemical characteristics including their solubility in water and their chemical structure.
Depending on their solubility in water they can be classified in two groups:
- Hydrophobic (lipophilic) - Molecules are lipid soluble and can easily cross the plasma membrane.
- Hydrophilic (lipophobic) - Molecules that are water soluble and do not readily cross the plasma membrane.
Depending on the chemical structure
Amino Acids are lipophobic.
Amines are derived from amino acids and contain an amine group (-NH2, known as the amino group). An important group of these are the catecholamines which contain a 6 carbon ring (catechol) and are derived from tyrosine. These include dopamine, norepinephrine and epinephrine. The thyroid hormone is derived from tyrosine. All except thyroid hormones are hydrophilic. The thyroid hormone is lipophilic (hidrophobic)
Two causes of the ocean can be floods or tsunamis. Also technically hurricanes are a cause of the ocean as well as precipitation, such as thunderstorms or snow.
