The correct answer is 4.) Eventually they become separate species
A process of formation of a new species from an existing species is called speciation.
When a single species changed into two or more separate species, is called speciation. Speciation can take place due to reproductive isolation. In reproductive isolation, the separated species no longer can interbreed among themselves. This is happened due to mating differences, sterility or environmental barriers which finally results into the adaptive splitting into two species.
Answer:
Lipids are hydrocarbon molecules that make up the structure of living beings. Few examples are <u>fats, oils and waxes</u>. Steroids are also a class of lipids but they are not structurally related to other lipids but do share some common properties with them. They are <em>insoluble in water and are hydrophobic</em>( water-repelling).
Explanation:
Lipids are insoluble in water as they are <em>non-polar</em> but soluble in non polar solvents (<em>chloroform</em>). Fat soluble vitamins like <u>A,D,E,K and steroids</u> have a different structure composed of fused four rings.
The most common example of steroid is cholesterol. Cholesterol acts as a precursor for many hormones and other signalling molecules.
Stem cells arise from the inner mass of the cell
Signalling factors trigger differentiation in stem cells
Genes that lead to the production of undifferentiated blood cells are activated
Signalling factors cause undifferentiated blood cells to produce red blood cells
Explanation:
Red blood cells are formed in the bone marrow. The precursor to the RBC is stem cell which is undifferentiated and pluripotent. The stem cell gets differentiated to form immature RBCs. Immature RBC then gets divided and becomes mature. Stem cell giving rise to RBC is called Haemoctytoblast. The process of erythropoiesis takes 2 days to form new red blood cells
Answer:
Endocytosis
Explanation:
the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane. The membrane folds over the substance and it becomes completely enclosed by the membrane. ... The plasma membrane engulfs the solid material, forming a phagocytic vesicle.
