The sequence of nitrogenous bases in dna varies widely. the sequence of the bases in dna is most important for which of the following? *
a. providing the instructions for the traits of an organism
b. preventing mutations from occurring during dna replication
c. allowing the dna to have the shape necessary for replication
d. form the sugar-phosphate backbone of dna molecules

c

explanation:

idk

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.