WebJan 8, 2024 · The origin of this type of aneuploidy occurs either in the primordial germ cells themselves, a proportion of which may be trisomic or monosomic (gonadal mosaicism) or during the extensive premeiotic mitotic divisions of the oogonia that occur during early foetal life. The term germinal mosaicism covers both types . WebOct 26, 2024 · The germinal period (about 14 days in length) lasts from conception to implantation of the zygote (fertilized egg) in the lining of the uterus. During this time, the …
Module 2 Flashcards by Sara Fieger Brainscape
WebSexual differentiation occurs: Question options: during the germinal period. as a result of the presence or absence of an X chromosome. because of the presence of secondary sex characteristics. as a result of the presence or absence of a Y chromosome. n 1 po Which of the following facts about color blindness is accurate? WebWhat is the germinal period of prenatal development? Section 4, Article 1 - Prenatal development usually takes between 266 and 280 days, or 38 to 40 weeks, which can be … bausepp
Genetics and Prenatal Development – Lifespan …
WebSep 24, 2024 · The germinal period (about 14 days in length) lasts from conception to implantation of the zygote (fertilized egg) in the lining of the uterus. During this time, the organism begins cell division and growth. After the fourth doubling, differentiation of the cells begins to occur as well. WebJul 23, 2024 · The prenatal period is a time of tremendous growth and also great vulnerability. A number of dangers can pose a potential risk to the growing fetus. Some of these dangers, such as environmental risks from teratogens and drug use, can be prevented or minimized. In other instances, genetic problems may simply be unavoidable. WebThis does not take into account unknown pregnancies. What is your belief about why so many take place, particularly during the germinal period? 2. Discuss neural proliferation, migration and differentiation 3. The US has one of the highest Infant mortality rates of all developed nations. tineke veenje