Answer:
Sickle cell disease in an autosomal recessive inherited disease which is caused by the mutation in the HBB (hemoglobin-β gene) gene present on the chromosome no. 11. In sickle cell, the red blood cells become sickle shape due to the abnormal shape of hemoglobin present in it.
These sickle cells are known to form a blockage in the blood vessels thereby causing damage to the vital organs. Human spleen constantly destroys sickle cells because they get trapped in it which causes a disease called sickle cell anemia.
Sickle cell anemia is normally the problem in genetic disease which is inherited from the parents to children. When both the DNA strand has a mutation in their HBB gene then only this disease will affect the individual.
Microorganisms that infect the middle ear cavity most frequently come from the pharynx.
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What is pharynx?</h3>
- A hollow tube called the pharynx extends from the back of the nose down the neck and finishes at the top of the trachea and esophagus.
- The nasopharynx, oropharynx, and hypopharynx are the three components of the pharynx.
- The pharynx, sometimes known as the throat, is a component of the digestive and respiratory systems.
- It transports food, liquid, and air from the mouth and nose downward.
- Common infections like tonsillitis and a sore throat can spread to the pharynx.
- The throat is a muscular tube that resembles a ring and serves as the conduit for liquids, food, and air.
- It connects the mouth and nose to the breathing passages and the esophagus and is situated behind the nose and mouth.
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Explanation:
The conversion of Celsius to Kelvin: Kelvin = Celsius + 273.15. Instead of 273.15 the value of 273 is also used.
B. White petal colour is a recessive trait.
Explanation:
In Mendelian genetics, the alleles depicted in small letters are recessive traits.
Since both alleles are same and in lower case they are homozygous recessive alleles for a white coloured petal gene.
The genotype of the trait will be tt because if it is crossed either with heterozygous or homozygous P alleles it will appear as tt to have phenotypic trait of white colour.
So the genotype will be tt.
Answer:
i think carbon dioxide
Explanation: because it needs that to make sugar to survive
