The branching point on a cladogram represents a common ancestor. A cladogram is a diagram used in cladistics to show relations among organisms. However it is not an evolutionary tree since it does not show how ancestors are related to descendants, nor does it show how much they have changed.
Answer:
The correct answer is D. zygote and finally develops into a fetus
Explanation:
Zygote is formed by the fusion of male gametes and female gametes. It is considered as the first stage of development of a baby. Zygote is a unicellular structure which develops into an embryo which is a multicellular structure.
Then this embryo develops and is called a fetus at the starting of the 11th week of pregnancy. A developed fetus is the final stage of prenatal development.
Therefore during successful prenatal development, a human baby begins as a zygote and finally develops into a fetus. So the correct answer is D.
Answer: Prepare to deliver the baby on-scene.
Explanation:
Birth crowning is a condition occurs during the period of gestation. In this baby's head starts emerging after each contraction from the birth canal after the second stage of labor. In this process the uterine muscle relaxes and tightens to help the newborn to come out of the birth canal.
According to the given condition, a preparation of delivery of the baby on the scene is preferred to avoid the negligence and delay. To protect the life of mother and child early action is required.
