Answer: D. Adaptations help organisms survive and reproduce in a particular environment.
Explanation:
An adaptation can be define as the changes that occur in the behavior, structure and physiology of the organism so that organism become suited to survive and reproduce in the adverse environment. Adaptation results due to evolution of the living organisms through the process of natural selection as a result of interaction of the organism with the changing or unsuitable environment.
Answer:
THYROID GLAND
Explanation:
Thyroid gland functions in metabolisms by activities of thyroid cells.This cells withdraws Iodine from metabolites and combine it with amino acid tyrosine for productions of Thyroid hormones:
ThyroxineT3,(20%)
TriiodothyronineT4(80%). This production is under the influence of Thyroid stimulating hormones,regulated by the pituitary gland,
T3 and T4 increase calorinogenesis, (liberation of heat from digestion to supply energy,and oxygen consumption of the heart.)
Deficiency of thyroid hormones are goiters, hypothyroidism, and hyperthyroidism
<span>Upwelling of deep waters brings nutrients to the surface</span>
Complete question:
You will find the pedigree in the attached files
Answer:
The correct option is C) <em>maternal mitochondrial mutations are inherited by </em><u><em>all of a mother's offspring</em></u><em>.</em>
Explanation:
Mitochondrial inheritance is one of the ways in which a disease or a trait might be inherited from the maternal line.
Most of the DNI is located in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly carry mitochondria, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this DNI, the whole progeny of the mutated woman will be affected, as they will get the mother´s mitochondria carrying the mutation. On the contrary, if there is a man affected by a disease caused by a mutation in mitochondrial DNI, non of their descendants will get the disease.
<em>In the exposed pedigree, we can see that the mother is affected by the disease, but the couple had two daughters, and only one of them was affected, while the other one was not. This tells us that the mutation occurred on a nuclear chromosome. If the mutated allele was in mitochondria, both daughters would be affected. </em>