When a lineage splits into multiple line of descents, then, it leads to speciation. It is a process by which a single population evolves into different species. The process of speciation leads to the development of two or more species as the lineages are splitted. These two evolved species are genetically independent.
Hence, the blank can be filled with 'speciation'.
OPTIONS:
A. 1% to 2% of total calories
B. 3% to 4 % of total calories
C. 5% to 10% of total calories
D. Up to 15% of total calories
Answer:
C. 5% to 10% of total calories
Explanation:
Contrary to the misconception that consuming food that has omega-6 fatty acids is unhealthy and might increase the chances of one developing cardiovascular problem, the American Heart Association in its journal, refute such unfounded claim, while recommending <em>a daily consumption of 5% to 10% of total calories, from omega-6 fatty acids, or 12 to 22 grams per day</em>. According to the AHA, omega-6 fatty acids, which are polysaturated fatty acids, are safe and beneficial to the heart. Foods like nuts, seeds, vegetable oils, salad dressing contain omega-6 fatty acids, which may reduce risk for cardiovascular diseases.
The answer is D.
Fun fact: People with one copy of the mutated gene have an advantage in sub-Saharan regions of Africa against Malaria. They can’t contract it!
Centrioles make spindle fibres by which homologous chromosomes are separated.........
The correct answer is option (A) leaves > deer > wolf.
A food chain is a linear sequence of organisms through which the nutrients and energy flow as one organisms feeds on the other. They show organisms starting from the producers and end with consumers or sometimes with detrivores or decomposers. Each level of the food chain is called the trophic level. The producers which use solar energy and prepare their food occupy the first trophic level, followed by the primary, secondary, tertiary, quaternary consumers occupying the next trophic level.
In the food chain given above, leaves > deer > wolf, deers feed on the leaves which are maximum in number comparitively, wolf feeds on the deer which are comparitively more in number than the wolves. This is the correct sequence of food chain showing the tranfer of energy and decreasing number of organisms with subsequent increase in the trophic levels.