The allele for unaffected (D) is dominant over the allele for Cystic fibrosis (d). A woman is heterozygous for this gene and a man is homozygous recessive. a. (1 pt) What is the genotype of the mother? b. (1 pt) What is the genotype of the father? c. (1 pt) What is the phenotype of the mother? d. (1 pt) What is the phenotype of the father?

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

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