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Dahasolnce [82]
3 years ago
13

A polygenic trait is controlled by

Biology
2 answers:
kherson [118]3 years ago
8 0

Answer:

A. two or more genes

Explanation:

DiKsa [7]3 years ago
3 0

Answer:

A. two or more genes because most genetic characteristics or traits are controlled by many genes.

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The cell bodies of sensory neurons that are in clusters of neurons outside the spinal cord are called ____.
Nonamiya [84]

Answer:

The cell bodies of sensory neurons that are in clusters of neurons outside the spinal cord are called  ____

The answer is "dorsal root ganglia"

Explanation:

Explanations of some terms

Sensory neurons:

Sensory neurons, also known as afferent neurons, have cell bodies that are located in the dorsal ganglia (also known as  spinal ganglia) of the spinal cord. Most sensory neurons have one axon which is split into two branches, they transmit impulses toward the spinal cord.

Spinal cord:

The spinal cord is a tubular structure composed of nervous tissue housed within the vertebral column, runs from the base of the brain to the lower spine. Spinal cord is a component of the Central Nervous System that serves as information highway the between brain and the body which Integrates and processes information. It can function with the brain and can also function independently of the brain.

Dorsal root ganglia:

Dorsal root ganglia also known as dorsal ganglia originated as bipolar cells. They exists within the peripheral nervous system and they have special nerve cell clusters that aid in transmitting the sensory messages of pain and touch. The dorsal root ganglia receive information from sensory receptor organs and transmitting the information to the central nervous system.

4 0
3 years ago
When and where was the possibility of growing thornless varieties of plants discovered?
m_a_m_a [10]
<span>The discovery of thornless plants was made around the turn of the 20th century. To name one such thornless plant, particularly, the Blackberry plant, the deviation from the thorned blackberry canes were discovered in the United States. Since then, several different thornless blackberry varieties have been cultivated for fruit gardens.</span>
7 0
3 years ago
How is cell divison controlled?
Sonja [21]
Cell controls on division contact with other cells once DNA (cell directions) is copied, cell divides sequence of steps
8 0
4 years ago
The hydrogen ion concentration of a solution is indicated by its<br> ___ value.
rosijanka [135]

The hydrogen ion concentration of a solution is indicated by its <u>pH </u>value.

Explanation:

  • A measure of acidity or alkalinity of water soluble substances (pH stands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle point.
  • Under normal circumstances this means that the concentration of hydrogen ions in acidic solution can be taken to be equal to the concentration of the acid.
  • The pH is then equal to minus the logarithm of the concentration value.
  • Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
  • The pH of a solution is a measure of hydrogen ion concentration, which in turn is a measure of its acidity.
  • Pure water dissociates slightly into equal concentrations of hydrogen and hydroxyl (OH−) ions. For a neutral solution, [H+] is 10−7, or pH = 7.
6 0
4 years ago
In the water cycle water moving from oceans to clouds involes which change in water
Lelu [443]

Answer:

B. It turns salt water into fresh water

Explanation:

7 0
3 years ago
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