the egg will travel into the uterus and eventually be shed oncea person's menstrual periodbegins. But if the egg joins with sperm and becomes fertilized, a zygote forms."
What is taken from the Scottish Blackface ewe? A. A fertilized egg cell. B. An unfertilized egg cell. C. A completely empty egg cell. D. An E. mbryo. 相关知识点: 试题来源: 解析 B [细节理解题。根据第二幅图画可知答案为B。] 答案B 解析 细节理解题。根据第二幅图画可知答案为B。
A fertilized egg is called azygoteuntil it divides into 16 cells, forming a ball-shaped structure called a morula. The events during the zygote stage involve the integration of both parents'DNAinto thecell nucleusand the beginning of rapidcell division, or cleavage. In humans, it takes about ...
aThe first division of the fertilized egg results in the establishment of polarity: the top and bottom of the embryo are already distinguishable. This establishment of polarity is the first step in the development of a complex organism, and is therefore of very great significance. It is not kno...
In a typical pregnancy that develops normally, a fertilized egg moves through the fallopian tube toward the uterus, where it implants and starts to grow. So, what is the definition of an ectopic pregnancy and what happens in this type of pregnancy? In an ectopic pregnancy, the fertilized egg...
A zygote is the very first form your baby takes – before they're even in the womb. Read on to find out how and when a zygote forms and how, if all goes well, it will become a blastocyst, embryo, fetus, and then baby. The definition of zygote A zygote is a fertilized egg, the...
The job of cervical mucus is twofold. Most of the time, it prevents things such as dirt, germs, or sperm from entering the uterus through the cervix. But leading up to and during ovulation, cervical mucus makes the passage through the cervix easier for sperm. Once an egg is fertilized, ...
a mathematical law that represents Infinity. According to the Golden Mean, every part relates to another part and can continue to divide and subdivide for eternity. An example of this is a fertilized egg. Initially starting out as a single organism, that cell, once fertilized, divides itself ...
While not everyone will experience it, this type of spotting can be a natural part of the implantation process. What causes implantation bleeding is the movement of the fertilized egg into the uterine lining. Some may wonder, "Do you always bleed during implantation?" The answer is no; not ...
Since Republicans are going down that path, one must ask, “What about embryos?” As a law professor, Supreme Court Justice Amy Coney Barrett signed a statement that life began at fertilization. An embryo is a fertilized egg. Fertility clinics discard thousands upon thousands of abandoned embryos...