Why are sex-linked traits more common in males than in females? a. All alleles on the X chromosome are dominant.
b. All alleles on the Y chromosome are recessive.
c. A recessive allele on the X chromosome will always produce the trait in a male.
d. Any allele on the Y chromosome will be codominant with the matching allele on the X chromosome

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.