Use the drop-down menus to match each phrase below with the type of microscope it describes.
magnifies objects in steps
is the type that was used to observe the first strands of dna
contains a series of lenses
includes magnifying glasses
creates a digital image
uses one lens for magnification

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 correct answer is sex-linked recessive.

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