A person infected with the human immunodeficiency virus (HIV) may not have any symptoms for a period of time. During this period the virus
affects the body by doing which of the following?
a The virus produces toxins that weaken immune cells and prevent them from reproducing.
Ob The viral genes are dormant while being copied with the host cell's genetic material
The virus uses nutrients meant for immune cells to fuel its own cellular respiration
The virus changes the identity of the nucleotides of immune cells to prevent the immune system from functioning normally,

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.

answer; increases;

answerblank(1); afferent neurons; blank(2); efferent neurons;

we solve the problem using the hardy-wineberg equation.

let us start with the homozygous recessive proportion of individuals with sickle cell anaemia,

we have the proportion as q² = 0.25.

∴ q = 0.5 (frequency of hbs in population)

further,

solving for the frequency of normal cell by using the fact that,

p + q = 1

∴ p = 1 - 0.5 = 1 - 0.5 = 0.5

now we can calculate 2pq in p² + 2pq + q², which is the frequency for heterozygous carriers of sickle cell anaemia,

∴ 2pq = 2 x 0.5 x 0.5 = 0.5

and the homozygous normal cell individuals proportion is given by the expression,

∴ p² = 0.5² = 0.25

hence, the carriers for sickle cell anaemia are in proportion, 0.5, or 50%.