Neither the peptide hormones or the metabotropic neurotransmitters such as the catecholamines, can enter their target cells. They bind to surface receptors, which then activate second-messenger systems in the cell. Peptides hormones are the hormones that consist of amino acids; they can be among the intracellular signalling peptides and proteins, and can include insect hormones, gastrointestinal hormones and thyroid hormones, but their actions are not limited to individual cells and they can act systemically.
The twisted shape of DNA is called Double Helix
What would most likely occur is that the organisms that eat salmon would have less food to eat and if their food supply, in this case, salmon were to run out, they would die or they would have to find something else to eat. If the organism that eats the salmon dies, in this case we'll call that organism, organism A, any other organisms that eat organism A will die or will have to find another means of food. So basically it causes a disruption in the food chain which can lead to the extinction of different species
Answer:
X-linked dominant
Explanation:
All of the Bob and Elenaor's sons are with normal skin, they inherited Y chromosome from the father and X from the mother.
On the other hand, all daughters have the same skin condition as Bob, they inherited one X chromosome from father and another from mother. X chromosome inherited from the father is enough for condition to appear, so it means that it is dominant and X linked.
