Sickle cell anemia is a genetic disease caused by a recessive allele. Sickle cell anemia affects the hemoglobin in red blood cells, making them the shape of crescents instead of disks. The disease can cause pain and damage blood vessels. A genetic counselor meets with a man and a woman that both are carriers of sickle cell anemia. Carriers have one copy of the sickle cell allele and one copy of the allele for making normal hemoglobin. What is the probability that the couple would have a child that was also a carrier for sickle cell anemia

1/2

Explanation:

A genetic counselor meets with a man and a woman that both are carriers of sickle cell anemia.

The sickle cell anaemia genotype is ss where for producing normal haemoglobin, we have SS or Ss (Carrier).

When both man and woman are carriers, we have

S. s

S. SS. Ss

s. Ss. ss

Thus, the probability that the couple would have a child that was also a carrier for sickle cell anemia is 2/4= 1/2.

q: compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city,

a:

comparing this to the inside of a food building/company.

all cells are surrounded by a plasma membrane, which protects the cell from its environment, keeping toxic substances out of the cell. it regulates which molecules are allowed to enter and exit the cell.

regulates all cell activity such as cellular metabolism, and growth in addition to storing and maintaining the cell's dna for transcription and replication. determines what proteins to make.

contains the organelles; site of most cell activity

the place where ribosomes do their working activity.

builds the proteins.

prepares proteins for use or export.

responsible for breaking down and absorbing materials taken in by the cell.

maintains cell shape.

transforms one form of energy into another.

answer; bodies of water store heat during the day and release it at