The Venn diagram compares aerobic respiration and anaerobic respiration. A Venn diagram is shown. One circle is labeled aerobic and the other circle is labeled anaerobic.

Which statement could be categorized only in the anaerobic section of the Venn diagram?
is performed by eukaryotes
has commercial uses
regenerates NADH
occurs in the mitochondria

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.

the answer is sex-linked recessive.