Answer:
Explanation:
Sickle cell anemia is a result of the point mutation, and in a change in just one nucleotide in a gene for hemoglobin. This mutation will cause the hemoglobin in the red blood cells to distort to a sickle shape when deoxygenated. "The sickle-shaped blood cells clog in the capillaries, cutting off circulation."
Answer:
Ascending pathway
Explanation:
Sensory pathways are ascending pathways
All humans have 46 chromosomes, 23 derived from either biological parent who has their own set.
Sex chromosomes make gene passing possible through creating offspring.
Answer: probability that both twins are affected is 0.0625 while the probability that both twins are unaffected is 0.5625
Explanation:
If both parents are heterozygous for albinism, it means they both have one recessive allele (Aa) each.
The possible genotype outcome of one child will be
AA Aa Aa aa
Therefore the possiblility one child will inherit both recessive allele (aa) is 1/4 and the probability that one child is unaffected is 3/4
If the had a dizygoyic twins this means the two children have different DNA.
So also the possibility of the second child to inherit both recessive allele (aa) is 1/4
The probability that both the twins are affected is
1/4 * 1/4 =1/16 = 0.0625
The probability that both are unaffected is
3/4 * 3/4 = 9/16 = 0.5625
Answer:
Eosinophils
Explanation:
Eosinophils are a type of white blood cells that involved in fighting against parasites (e.g hook worms) and some other infections. The also involved in the modulation of allergic inflammatory responses, such as asthma. They fight infection by trapping harmful substances, killing parasites and also acting in the case of inflammation. Eosinophils comprises of about 2-4% of the total white blood cells.
They are produced in the bone marrow during hematopoiesis before they migrate to the blood, they do not multiply after differentiation.
