Answer: Mutations are the most fundamental way to add new genes to a gene pool.
Explanation:
A mutation is either permanent or temporary changes that may occur in the DNA sequence of the organism that makes up a gene which is the functional unit in the organism. These mutations will add genetic variations in the gene pool of the population. Those mutations which are hereditary which means they can be transmitted from parents to offsprings are called as germline mutations.
Acquired (somatic) mutations are those mutations which occur's during a persons life. These mutations occur due to ultraviolet radiations. These mutations occur in the somatic cells not in the germ cells therefore, these cannot be passed from one generation to the next.
Answer:
The correct answer would be cell.
Cell is the basic structural and functional unit of life or body. For example, nerve cell is the functional and structural unit of nervous system, nephron forms the structural and functional unit of excretory system et cetera.
When many similar cells work together to attain the same function, they form a tissue.
Similarly, similar tissues work in synchronization to form an organ which forms an organ system.
Ultimately, the organ systems form an organism.
A) blood vessel diameter
B) receptors in the aorta
C) vasomotor center
D) blood pressure
Answer:
Answer is D. Blood pressure.
Explanation:
Blood pressure is the pressure of the blood within the arteries, produced by the contraction of the heart muscle.
Answer:
In an unfortunate accident, a young man is struck in the leg by a bullet that tears through an artery just above his right knee. The subsequent blood loss leads to a rapid drop in blood pressure. Receptors in the aorta monitor blood pressure and send signals to the vasomotor center of the brain. In this case, the vasomotor center will increase its stimulation of smooth muscle in the blood vessels, which will cause them to constrict. This constriction leads to an increase in blood pressure.
What represents the effector in this feedback system? receptors in the aorta
Explanation:
Hyphae store the spores that are produced by the stolon.
Hyphae are provided structural support by the stolon.
Hyphae produce spores, and the stolon distributes them.
Answer:
The correct answer is option A, Hyphae can grow to form a stolon above ground
Explanation:
Stolon are the modified version of hypae or it is a structure that connects group of hypae. The hypae extends horizontally all over and colonies the food. In some plants, the hypae extends horizontally to connect groups of rhizoids and sporangiophores. A stolon is nothing but a horizontal hyphae which assist fungus in spreading. A stolon looks like a fibrous network.
Answer:
A, Hyphae can grow to form a stolon above ground
Explanation:
b. The stratosphere
c. The thermosphere
d. The troposphere