Answer:
Agglutination or clumping occurs when blood that contains the particular antigen is mixed with the particular antibody.
Explanation:
Clumping of blood types takes place thus;
A+ - Agglutination with Anti-A and Anti-Rh. No agglutination with Anti-B.
A- - Agglutination with Anti-A. No agglutination with Anti-B and Anti-Rh.
B+ - Agglutination with Anti-B and Anti-Rh. No agglutination with Anti-A.
B- - Agglutination with Anti-B. No agglutination with Anti-B and Anti-Rh.
AB+ - Agglutination with Anti-A, Anti-B and Anti-Rh.
AB- - Agglutination with Anti-A and Anti-B. No agglutination with Anti-Rh.
O+ - Agglutination with Anti-Rh. No agglutination with Anti-A and Anti-B.
O- - No agglutination with Anti-A, Anti-B and Anti-Rh.
Answer:
Explanation:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.
ORR
Struggle for existence, variation and inheritance. These are said to be the necessary and sufficient conditions for natural selection to occur.
<span>C.) A pea is a dicot, so the radicle grows and gives rise to a main root and its branches</span>
Think of blood as a gas/ fuel for the car ( your body). If there is no fuel, there's no movement (dead) so when the fuel tank is damaged the car won't function properly.
So if the heart becomes damaged, or weakened it would start making blood clots and damage the organs that need blood to function properly. The circulatory system wouldn't function properly and because other organs depend on the circulatory system it would cause a chain reaction, affecting other body systems. <span />
The variations might help the organism to survive if there is a change in its environment
Eg heat resistant bacteria
The variation might help the organism survive predators
Eg. Green beetles blend with green leaves thus disabling crows to spot them
:)
