Answer: B. beta
Explanation:
Sickle cell anemia is a inherited disorder which occur due to mutation of gene responsible for synthesis of hemoglobin protein. Typically the gene which is responsible for synthesis of beta-globin protein which make the beta chains in the hemoglobin is affected by the mutation. As a result of this the red blood cells acquire a shape of sickle rather than round. Pain, cold, stress, dehydration and illness are the symptoms associated with this disorder.
Answer:
False
Explanation:
Since it's a recessive disorder that means the presence of the dominant allele will overshadow the recessive if it's present. Two recessive alleles have to be present in order for the person to have the disorder.
It depends on what cells ur talking about
The correct answer is option Selective breeding.
The selective breeding is a technique, in which two different individuals having a specific desired phenotype is present. Both the individuals have different desired phenotype. They are crossed together, so that a progeny having both type of phenotype or trait is obtained.
Hybridization, cloning and recombinant DNA technology emerged years after the introduction of selective breeding. These are very new tools used in DNA technology, whereas, selective breeding was from ancient times.