Considering that the sickle cell allele is recessive, give a probable genotype for the patient

The probable genotype of the patient is a homozygous recessive allele (SS)

Explanation: Sickle cell is a recessive disorder, therefore it must occur in a homozygous state in order to manifest phenotypically. When it occurs in a heterozygous state AS, the dominant allele A will overshadow its effect. Sickle cell is a genetic disease caused by abnormal haemoglobin in the blood which gives the red blood cells a sickle shape denoted as S. A normal haemoglobin gives the red blood cells a disc shape and its denoted by A.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: