Answer:
Has the genetic disorder
Explanation:
Recessive gene are genes that are expressed phenotypically only in the homozygous condition. Homozygous is a condition where an organism contains identical alleles in homologous chromosomes. When a person is homozygous recessive for a recessive genetic disorder, then this genotype means that person has the genetic disorder since they have the identical allele.
I think the third is correct
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The two factors that are regulated to maintain fluid balance in the body is ECF volume and salt balance.
ECF volume is the Extracellular fluid volume. Maintaining the ECF volume is essential to prevent any damage to the body. In severe cases of disbalanced ECF volume, it can also lead to circulatory shock.
Salt balance is essential to be maintained in the body for the proper functioning of all the system of the body. Excess of salts like sodium can cause dehydration. Sodium is the most critical element in the body and its levels should be strictly maintained. Even low salt conditions can lead to fatigue, nausea, weakness, confusion, etc.
To know more about salt balance, here
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50% because you will have 2 Tt and one TT and one tt and 2 Tt is 50%