The emrbyo implants itself onto the wall of the womb - on the endometrium, cell duplication and division occurs, then the outer layer of the embryo generates the placenta which connects the baby to the mother.
Once the egg is fertilized it remains fertilized until the egg is eaten, incubated or goes rotten and decays. It never goes back to being an unfertilized egg.
The male chicken or rooster chooses a hen from the flock and does a mating dance or display for her. This lets her know she has been chosen to mate with the male. He will do little sidesteps and circles around her, then dip his wings. He sometimes drags his wings on the ground. At a certain point in this dance he grabs her by the feathers at the back of her neck. The hen will flatten out or squat down to the ground and the rooster steps up onto her back while still holding onto the feathers of her neck for balance. The hen lifts her tail slightly to offer access to her cloaca and the rooster touches his cloaca to hers. There is no penetration of sexual organs as happens with mammals since a birds anatomy is different. A Sperm packet is transferred to the hen via this contact. This is all over in 15 to 30 seconds and the rooster goes on to find another hen to mate with.
Hens lay approximately 5 eggs per 7 day week. Sperm from a rooster is stored in the hen's oviduct for up to 10 days, so after just a single successful mating many fertilized eggs can be laid. Depending on when the hen's last egg was laid, the next egg laid after the hen was mated will most likely be fertile. A rooster is necessary to have fertilized eggs, but a hen will lay eggs even if no rooster is present. Incubation time for fertilized eggs is 21 days. Days 1-18 require an internal temperature of 99.5 F and a humidity of 50-60%. Days 18-21 require an internal temp of 99.5 and a humidity of 70-80%. Eggs must be turned 3 times a day during incubation to ensure that the embryo doesn't stick to the inside of the shell, but DO NOT turn during the last three days as the chicks are trying to orient themselves for hatching.
the population of owls decreases
No. The number of male cats mating with a single female does not depict how large the litter will be - it just means that the resulting litter of kittens will likely have differing genes from one sibling to the next.
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.
If the egg is not fertilized it disintegrates (breaks down) and menstruation (your period) begins 11-16 days later. The mature egg is fertilized when it is joined with a sperm cell.
If implantation does not occur, the blastocyst (embryo) does not successfully attach to the lining of the uterus. In this case, the body will shed the lining during the next menstrual period. The process starts anew during the next ovulation cycle.
After fertilization has occurred, an embryo is formed and grows for the next 40 weeks in the mother's womb.
Uterus Eggs are first fertilized in the fallopian tubes after sexual intercourse. After approximately 4 days or so the embryo (fertilized egg) travels to the uterus where it attaches to the endometrium, or the lining of the uterus. This is where the baby will stay as it develops over the next 9 months. The baby is not in the abdomen, instead it is the uterus that expands as the baby grows. The endometrium is also what is referred to by some as the "womb".
Uterus Eggs are first fertilized in the fallopian tubes after sexual intercourse. After approximately 4 days or so the embryo (fertilized egg) travels to the uterus where it attaches to the endometrium, or the lining of the uterus. This is where the baby will stay as it develops over the next 9 months. The baby is not in the abdomen, instead it is the uterus that expands as the baby grows. The endometrium is also what is referred to by some as the "womb".
It takes 1-3 days for a egg to get fertilized and then it's called a zygote. It then takes 3-5 days until the zygote enters the uterus. In the uterus, the cells continue to divide and becomes blastocyst which attaches to the lining of the uterus. This is called implantation and is completed by day 9-10. The next step it's a embryo.
Not at first, but they become white eventually. When the eggs are first laid they're almost clear, but they soon develop a white calcium patch over the area where the embryo is. The white patch spreads over the next 7-10 days until it forms a solid ring around the outside of the egg. When the embryo is about half-developed (at 1.5 to 4 weeks, depending on species), fertilized eggs containing live embryos become completely white. If the embryo dies, the shell stops developing.
An embryo is formed and grows for the next 40 weeks in the mothers womb.
Uterus Eggs are first fertilized in the fallopian tubes after sexual intercourse. After approximately 4 days or so the embryo (fertilized egg) travels to the uterus where it attaches to the endometrium, or the lining of the uterus. This is where the baby will stay as it develops over the next 9 months. The baby is not in the abdomen, instead it is the uterus that expands as the baby grows. The endometrium is also what is referred to by some as the "womb".
Uterus Eggs are first fertilized in the fallopian tubes after sexual intercourse. After approximately 4 days or so the embryo (fertilized egg) travels to the uterus where it attaches to the endometrium, or the lining of the uterus. This is where the baby will stay as it develops over the next 9 months. The baby is not in the abdomen, instead it is the uterus that expands as the baby grows. The endometrium is also what is referred to by some as the "womb".
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