Sickle cell disease is a genetic disorder that gives red blood cells a crescent shape instead of the typical disk shape. this genetic disease is recessive. if two individuals who have one recessive gene have four children, what percentage of the children will show symptoms of sickle cell disease?

25 percent
100 percent
50 percent
75 percent

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.