I dont freaking know
There really isn't much difference between a zygote, embryo, and fetus. A zygote forms after fertilization and becomes an embryo, which later becomes a fetus.
The period of time during which a zygote, embryo, or fetus is carried in the female reproductive tract is approximately 38-40 weeks in humans. This time frame consists of three stages: zygote (fertilized egg), embryo (up to 8 weeks), and fetus (9 weeks until birth).
The implantation of the zygote occurs in the uterus. The developing fetus continues to grow and develop in the uterus until birth.
The stage of human development between zygote and fetus is the embryo stage. This stage typically lasts from the 3rd week to the 8th week after fertilization. During this time, the cells continue to divide and differentiate into the various organs and tissues of the body.
They develop in the uterine horn, as the fetus grows, it will move into the uterus and then through the birthing canal at parturition.
After the egg has been fertilized the egg transfoms into a zygote the embryo and then a fetus which after becomes a baby!
There really isn't much difference between a zygote, embryo, and fetus. A zygote forms after fertilization and becomes an embryo, which later becomes a fetus.
After fertilization, the zygote undergoes rapid cell division to form a blastocyst. The blastocyst implants into the uterine wall and develops into an embryo. Over the next nine months, the embryo grows and undergoes various stages of development to become a full-term fetus.
Fetus zygote is not the term to use. A zygote is a fertilized egg. An embryo is a developing baby. A fetus is a baby before it is born.
After fertilization, the egg and sperm combine to form a zygote. The zygote then undergoes multiple cell divisions to form a blastocyst, which implants into the uterus and develops into an embryo. The embryo continues to grow and develop into a fetus over the course of pregnancy.
FeRtIlIzAtIoN--->zYgOtE-->eMbRyO-->dIfFeReNtIaTiOn.:BaBy GrL:.143It gets bigger...
Fertilization is the process where a sperm cell fuses with an egg cell to form a zygote. This zygote then starts to divide and develop into an embryo. If fertilization is successful, the embryo implants itself into the uterus where it continues to grow and develop into a fetus.
Zygote-> Embryo -> Fetus
The embryo lasts until about week 10 or 11 and then it is known as a fetus.
The first organ to develop in the embryo is the heart. In a fetus, there is a brain, but it isn't fully developed and can't understand signals from the nervous system. Therefore the first functional organ would be the heart. But the first thing to start developing in a fetus is the nervous system. ( no that isn't an organ )
After fertilization, the egg and sperm fuse to form a zygote. The zygote undergoes multiple cell divisions, developing into an embryo. The embryo implants into the uterine lining, where it continues to grow and develop into a fetus.
After a sperm fertilizes an egg its referred to as a zygote. Then it becomes a fetus, I believe after the first trimester.