Which of the following shows the chromosome set of a normal human male
22 autosomes and XX
22 autosomes and XY
44 autosomes and XX
44 autosomes and XY
It takes about 5 to 7 days for the embryo to reach the?
uterus
placenta
chorion
fallopian tube
The embryo is enclosed in a fluid-filled sac called the amnion. The fluid is called the placenta fluid.
In the uterus the embryo settles on the endometrium and sinks into it, embedding itself in the endometrium. This process is called implantation.
Between which days does menstruation take place? From the diagrame
4-8
14-28
0-4
14-20
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