What is the name of the organ that lines part of the wall of the uterus and nourishes the embryo with substances from the mothers blood?

What do scientists need to look at before developing an argument

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this