The period of development that includes the creation of the zygote, attachment to the uterine wall, and continued cell division is known as the gestation period.
The gestation period for humans is normally 9 months. The spermatozoa fuse with the ovum to form a single-celled zygote in the ampullary region of the fallopian tube.
The germinal period is initiated with germinal stage and is followed by embryonic period.
Germinal period:
The fusion of spermatozoa with the ovum to form a zygote is called fertilization. The zygote then follows mitotic division and increases in cell numbers in the route of 2, 4, 16, 32… and so on. These series of divisions are known as cleavages. The embryo of up to 32 cells is called a morula. As more cleavages take place, the morula turns into a hollow ball of cells called a blastula. The blastula is enclosed in a protective sheath called a blastocyst. The blastula gets embedded into the endometrial lining of the uterus. This is called implantation. The blastocyst develops the placenta. The placenta supplies the essential nutrients required for the development of the embryo.
Embryonic period:
The embryo is connected to the placenta through the means of an umbilical cord. The transmission of nutrients to the embryo from the placenta occurs through the umbilical cord. When the embryo is developed it is called a fetus. The fetus remains generally in a head-down position toward the cervix through which it is transferred out from the uterus. This procedure of expelling the fetus out of the mother's body is commonly known as delivery.
To know more about gestation period, refer to the following link:
brainly.com/question/26027389
#SPJ4
Agriculture, surplus of food
The answer is Securely attached.
According to them, the main difference between the securely attached adults and non secured attached adults are how they act on their impulse.
Non-secured adults will tend to be easily provoked by short impulses in facing problems while securely attached adults exert greater controls upon their behaviors
<span>The work of the fielding brothers brought about the first official crime reports and Bow Street Runners.
The Bow Street Runners have been called London's first professional police force. The force, originally numbering six men, was founded in 1749 by the magistrate Henry Fielding, who was also well known as an author.</span>
Answer:
d. Ask one of your fellow group members to take some of your work.
Explanation:
If fellow co-workers are enjoying a break because they have finished their tasks quickly, one should ask one of tem to help with some of the work. This is a common situation in the workplace in which co-workers are expected to cooperate with each other, because cooperation leads to better results for the company as a whole.