Answer:
Explanation:
could we get a multiple choice or ?
Answer: Oviparity, expulsion of undeveloped eggs rather than live young. The eggs may have been fertilized before release, as in birds and some reptiles, or are to be fertilized externally, as in amphibians and many lower forms
hope this helps and please brainliest
Answer:
The isotype of these antibodies is igG
Explanation:
Anti-Rh response are employed by medical practitioners to define the Rh antigenic profile of human blood samples.
Fetal red blood cells are necessary for increasing the production of antibodies against Rh- antigens in Rh- women who are carrying a Rh+ fetus. The isotopes of the required antibodies is IgG.
The igG antibodies have high level of affinity and are present in blood, where they can make toxins, viruses, and bacteria ineffective, and activate the complement system.
Answer:
Gastrulation.
Explanation:
The embryonic development occurs through the different developmental stages like cleavage, morula, blastula and so on. The formation of the germ layers occur in the gastrulation period.
The primitive streak is the structure that develops during the early stages of the gastrulation. As the embryo becomes asymmetric., the cells moves from their initial position and leads to the formation of primitive streak in the gastrulation phase.
Thus, the correct answer is option (C).
