blood is known as the universal donor, which means it can be given to anyone needing a blood transfusion. blood is known as the universal recipient, which means it can receive all blood types during a transfusion.

O negative blood is the universal donor.

AB positive blood is the universal recipient.

Hope this helps.

Type O, Type AB

Explanation:

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

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.