Darwin's theory of natural
selection argues that evolution favors those organisms that are best adapted to
their environment. The law states that organisms with
heritable traits better suited to the environment will survive while the
inferior species will be eliminated.
Answer:
Hemopoiesis
Explanation:
Blood is the main connective tissue and consists of plasma and formed elements. The formed elements of blood are erythrocytes, leukocytes and thrombocytes.
Hemopoiesis is the process of formation of red blood cells, white blood cells and platelets. The process of hemopoiesis in adults occur in the bone marrow. Hemocytoblast leads to the formation of all formed elements of the blood.
Thus, the correct answer is option (B).
Answer:
1. eukaryotic 2. interphase 3. proteins 4. cancer <em>For the blanks by order top to down.</em>
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Explanation:
Answer: Genetic variability is beneficial for the survival and adaptation. But a flaw in DNA Replication Control or check may leads to the death of cell or may contribute in the disease or cancer.
Explanation:
Almost every species comes with the diversified collection of genes (genome). And some of the diversity comes from the spontaneous mutation but it occurs on a very low frequency. The genes either express constitutively or occasionally for an important task like genes responsible in the generation of ATP by glycolysis, tricarboxylic acid cycle, electron transport chain etc. While some of the genes are inducible that is only activated in a response to an external stimuli. Genetic variations in inducible genes might account for the adaptability or negligible change in a species genetic expression but genetic variation in constitutive or house keeping genes leads to cancer cell formation or even cell death. like mutation occur in p53 genes dysregulate the cell cycle or mutation occur in DNA polymerase enzyme that is responsible for the incorporation of NTPs (nucleotide tri-phosphates) according to wobble base pairing rule in order to make a complementary new strand from the old or parent strand, will eventually leads to cause mutations ultimately results in cell death or cancerous cell formation.
Answer:
fructose∠sucrose∠cellolose.
Explanation:
Fructose is monosacharaide composed of 12 carbon atoms.
sucrose is disacharaide composed of a glucose and a fructose .
while celolose is a poly sacharide made of milions of glucose molecules.