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Why are identical twins identical and fraternal twins are not?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Can a women have 2 eggs fertilized by 2 different guys?
yes
How do fraternal twins form?
The woman's body releases 2 eggs instead of one, and both get fertilized.
What is identical and what is fraternal?
Identical twins come from the same fertilized egg; fraternal twins come from 2 fertilized eggs.
What is the difference fraternal and identical twins?
Identical twins come from the same fertilized egg; fraternal twins come from 2 fertilized eggs.
Do birds eggs have to be fertilized to make chicks?
No, not all chicken eggs are fertilized. Most mass-produced eggs from battery farm operations are not fertilized, as the hens live their whole lives without seeing a rooster. Roosters must mate with the female chickens in order for the hens to produce fertilized eggs. No rooster, no fertilization. Hens are able to produce fertilized eggs for 1-2 weeks from one conjugal encounter with a rooster, but it takes a few days for the rooster's sperm to begin fertilizing her eggs.
You have a pet duck and she has a nest of 10 eggs She has been sitting on them for 2 weeks but the eggs are not fertilized What should you do?
eat 'em
How do fraternal twins do?
The woman's body releases 2 eggs instead of one, and both get fertilized.
How do twins happen?
Fraternal twins (and other multiples) occur when the female ovulates more than one egg at a time and more than one is fertilized. Females that are overweight or older are more likely to ovulate more than one egg at a time. Fertility drugs encourage the body to 'drop' more than one at a time. And the tendency can be inherited.
How many eggs does a chicken usually lay when fertilized?
half a year about 280 a full year 325
When an egg is not fertilized it dies?
When an egg is not fertilized it continues its journey through the fallopian tube and enters the uterus but does not implant. The egg will be expelled from the uterus during the next period of menstruation.
How are identical twins created or formed?
There are two way twins are formed. Twins can form by two eggs being released by the female and the sperm will fertilize both eggs. The other way twins can be formed is if one fertilized egg divides and forms two eggs.
