Answer:
The correct answer is codominance.
Explanation:
It is given in the question that the genotype of Martin is HbS/HbS, and is exhibiting sickle cell anemia with unusual hemoglobin. On the other hand, the genotype of Cindy is HbA/HbA, which shows that she possesses normal hemoglobin. Both of them have a child, Mary who as usual is exhibiting genotype HbS/HbA.
This shows that Mary has acquired both the alleles for sickle cell anemia from her parents, and thus, is demonstrating both unusual and normal form of hemoglobin. Sickle cell is a condition that does not demonstrate the phenomenon of complete dominance, as it is a codominant trait.
A phenomenon in which the features of both the alleles are expressed in the phenotype is termed as codominance. Hence, Mary is demonstrating a codominance pattern.
Answer:
Option D, inhibiting the production of lymphocytes
Explanation:
Options for the question are -
A.slowing the shortening of telomeres.
B.accelerating the production of NK cells.
C.stimulating the release of endorphins.
D.inhibiting the production of lymphocytes.
Solution
Acquired immune deficiency syndrome (AIDS) is an acquired immune deficiency syndrome cause by human immunodeficiency virus (HIV) infection.
CD4+ T lymphocyte is an essential part of in immune responses and an HIV attacks on the immunity of an individuals by killing CD4+ T lymphocyte.
In general, out of total T lymphocytes , there are nearly 65% of CD4+ T lymphocytes a healthy individual. The remaining T lymphocytes are CD8+ T lymphocytes
An HIV infected person, has damaged body's immune system leading to decrease in number of CD4+ T lymphocyte as of hampered CD4+ T lymphocyte production.
Hence, option D is correct
B.
E.
F.
They have the possibility to have a child with the disease
Simple version:
6 levels of environmental organization
individual
population
community
ecosystem
biome
biosphere
complicated version:
Exploring levels of biological organization
Biosphere
Ecosystem
community
population
organism
organs
tissues
cell
organelles
molecules
