Which of these events occurs first?

A) gastrulation
B) cleavage
C) implantation
D) formation of the placenta


B

Biology & Microbiology

You might also like to view...

Which organ lies in the pelvic cavity?

a. stomach b. bladder c. liver d. large intestine e. heart

Biology & Microbiology

The enzyme lactase splits the lactose molecule into ____________ and ____________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

An example of a(n) anion is K+

__________________ Indicate whether the statement is true or false.

Biology & Microbiology

Her immune system's recognition of the second infection involves memory _____

A) helper T cells B) natural killer cells C) plasma cells D) cytotoxic T cells

Biology & Microbiology