Blood flowing in umbilical cord is
$50\%$ maternal and $50\%$ foetal
$100\%$ foetal
$100\%$ maternal
$75\%$ maternal and $25\%$ foetal
It's Obvious
The figure given below illustrates the changes taking place during the human menstruation cycle
Identify hormones $A, B, C, D$ and $E$ from the figures
In the boxes shown in the figure write the name of the hormone (or hormones) controlling the stage in the human menstrual cycle
In vertebrates the nails are formed from
Which of the following structure is found in blastula
The amniotic fluid is taken out with the help of surgical needle and separation of the embryo cells present in this fluid is done by
In determinate cleavage, the spindle is
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