Answer:
Placenta
Explanation:
Placenta is the connection between the mother and developing foetus. It secretes hCG hormone. The developing foetus gets nourishment from the mother's body by placenta.
It is a temporary endocrine gland and cut after the child birth. This supplies blood, oxygen to the embryo by the process of diffusion. Placenta also acts as the excretory organ for the developing foetus.
Placenta are formed from the finger like projection of blastocyst called trophoblast. The one trophoblast forms placenta while others helps in holing the foetus in the mother's womb.
Answer:
A true
Explanation:
Living things are made of four types of molecules, known as macromolecules. These macromolecules are proteins, nucleic acids (DNA and RNA), lipids (fats) and carbohydrates. Each type of macromolecule is made of its own building blocks, which are intricately connected to form different shapes.
Throughout the course of evolution, organelles such as mitochondria and chloroplasts (a form of plastid) may have arisen from engulfed prokaryotes.
If the purse fit in to the thingy
Detached ear lobe allele is dominant over attached ear lobe allele
<u>Explanation:</u>
Mendel is the one who found the reason why an offspring has characteristics of the parent. He found that some traits were exhibited in an individual while the others were not. So he named the expressive allele as dominant trait and the one which in not expressive as recessive trait.
He formulated a set of hypothesis and experimented it on the pea plant to form the “Law of Inheritance”. In humans the detached ear lobe, blood groups all are examples of the law of dominance. Hence Mendelian traits are the physical characters that are passed on from one generation to the other
.