Answer:
25%
Explanation:
From the description;
The parents: half shaded circle and square = heterozygous parents
The offspring:
unshaded square = homozygous normal
half shaded circle = heterozygous normal
half shaded circle = heterozygous normal
completely shaded square = affected (homozygous abnormal)
The unshaded and half shaded offspring are normal and do not have sickle cell anemia. The completely shaded square represents a male offspring with sickle cell anemia.
<em>Out of 4 offspring, 1 is affected for sickle cell anemia. Hence the percentage of the offspring that have sickle cell anemia is 25%.</em>
Answer:
The answer is "frequency with which they are activated".
Explanation:
Frequency refers to the number of consecutive repetitive events per unit time. It is measured in hertz (Hz), equivalent to a single event per second. The time is the number of one cycle in a recurrent event, and so the duration is the same for the frequency, hence the frequency at which they are triggered is a key determinant of the brain's connections to be eliminated and maintained.
Answer:
Energy enters the ecosystem via sunlight as solar energy
Explanation:
when the solor energy comes down it goes to the grass when the animals eat it they have consumed that i put a picture below if that helps
Lower.
substances diffuse from higher to lower concentrations, so the blood would need a lower concentration of carbon dioxide that the cells
Answer:
1. Light first enters the eye through the cornea.
2. The retina is the light absorbing layer of the eye that contains the rod and cone cells.
3. A cell in the retina that is responsible for black and white vision, as well as night vision is a rod.
4. A cone is a cell in the retina responsible for color vision.
5. rhodopsin is a protein found in rods; it is needed for night vision.
6. One type of preformed vitamin A, retinal, can be converted from retinol.
7. The name for the family of substances that are all types of preformed vitamin A is retinoids.
8. The process called bleaching occurs when light enters the eye and interacts with and changes rhodopsin, causing dissociation of vitamin A from rhodopsin.
