Answer:
An allele is one of two, or more, forms of a given gene variant. For example, the ABO blood grouping is controlled by the ABO gene, which has six common alleles. Nearly every living human's phenotype for the ABO gene is some combination of just these six alleles.
Explanation:
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Horses sleep while standing, unless it is necessary for them to get REM sleep. The amount of REM sleep needed is not much, so they will spend most of their time when sleeping, standing.
Biogeography is the study of geographical distribution of fossils, various species (plants and animals) and ecosystems throughout geological time and space
Answer:
The correct answer is option b. "Enzymes display high specificity with respect to their substrates".
Explanation:
One of the characteristics of most enzymes is their high specificity towards their substrates. This is illustrated in the experiment herein stated. Glucose is the main substrate of Hexokinase, since it catalyzes the reaction between glucose and ATP to form glucose 6-phosphate and ADP. In this experiment, different sugars were substituted for glucose in Hexokinase's reaction , and the results show that the relative rate of reaction was reduced to 0.4 in the case of mannose, and up to 0.0 in the case of xylose. Since no sugar was able to have the same relative rate of reaction as glucose, we can conclude that Hexokinase is highly specific to its substrate.