Brain is protected by skull,blood brain barrier for filtration,cerebrospinal fluids that cushion brain and three membranes called duraarchnoid and pia mater
<h3><u>Answer;</u></h3>
68 calories
<h3><u>Explanation;</u></h3>
- <u><em>Carbohydrates is one of the biomolecules, others being nucleic acids, lipids and proteins. Carbohydrates are the major sources of energy in the body.</em></u>
- Carbohydrates are made up of carbon, oxygen and hydrogen. They are classified as monosaccharides, disaccharides and polysaccharides.
- <em><u>Each gram of carbohydrates yields energy equivalent to 4 calories. Therefore, 17 grams will yield (17×4) 68 calories.</u></em>
Answer:
The proportion of a genotype (i.e., AB) in a population.
Explanation:
- Every trait is controlled by some alleles and their combinations. Allele frequency determines the frequency of occurrence of a particular allele in a population.
- It can be determined by genotype frequency or proportion of a particular genotype in a population. As a genotype is a result of various alleles coming together, its frequency can help us to calculate the allele frequency.
- For example, in a population with two alleles A and B, A allele can either occur as AA or as AB. To calculate the frequency of A we will have to calculate the genotype frequencies of AA and AB.
