All of the progeny from a testcross were observed, and it was noted that out of a total of 500 progeny, 100 showed a particular recombinant phenotype. This indicates that the recombination frequency between the two genes involved isa. 10%.
b. 20%.
c. 50%.
d. 100%

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enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.