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What does fraternal twins and identical twins have in common?
Identical twins are twins that develop from same egg. These twins have same genome, also they have same physical appearance with minimal differences.
Why must any differences between identical twins be controlled only by the environment?
Identical twins have the same DNA - meaning that without the effects of environment they would be identical in every single way.
Why does identical twins not have the same weight and Skin colour?
Eye colour is caused by genetics whereas the weight of a person depends on how they life their life (how healthily they eat or how much exercise they do) so it is an environmental variation. Identical twins have the same genes so have the same eye colour.
Do identical twins have the same acquired traits?
Acquired basically means what you've gotten after birth. Twins who grow up together tends to be raised the same way, go to the same schools ASO, so they often share a lot acquired traits. But as they get older, their personalities usually begin to develop in different directions, and with that, they start getting different acquired traits as well.
How do you know if two twins are identical or just fraternal twins that look a lot alike?
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
Do all twins develop the same way?
no
What a homozygous?
It literally means "same egg". The term is used to refer to multiple births (twins, triplets etc.) It is a fancy way to say identical twins. Heterozygous twins did not develop from the same egg but two (or more) different eggs. They are also called fraternal twins.
What does fraternal twins and identical twins have in common?
Identical twins are twins that develop from same egg. These twins have same genome, also they have same physical appearance with minimal differences.
What is phenoype in identical twins?
Human identical twins have the same DNA (e.g. identical genotype), but generally have slightly different phenotypes. In this way, you are in fact able to tell twins apart with some study of their features. While their DNA is identical (more or less), they do develop on their own after separation and on through life, making their outward appearances (or phenotype) slightly different. In non-human species, this can be more difficult to discern, but the same does still apply.
What is the difference between idetical and non idetical twins in the way they are found?
The difference between Identical and Non-Identical twins is that Identical twins share the same placenta and are basically identical to one another. Non-Identical twins do not share the same placenta in the womb and two eggs fertilized at time of conception as opposed to one egg splitting in the case of Identical twins. I think that covers the basics. Hope this has clarified things for you.
Why must any differences between identical twins be controlled only by the environment?
Identical twins have the same DNA - meaning that without the effects of environment they would be identical in every single way.
What do twins have in common?
Identical twins are identical because they both came from the same egg. The term "Identical" is used as they look very much like each other and anybody can say that they are twins by just looking at them.
Why does identical twins not have the same weight and Skin colour?
Eye colour is caused by genetics whereas the weight of a person depends on how they life their life (how healthily they eat or how much exercise they do) so it is an environmental variation. Identical twins have the same genes so have the same eye colour.
Why don't twins have the same prints?
No one has the same fingerprints. That's just the way of genetics. Identical twins look exactly the like, but their DNA isn't the same.
Do identical twins have the same acquired traits?
Acquired basically means what you've gotten after birth. Twins who grow up together tends to be raised the same way, go to the same schools ASO, so they often share a lot acquired traits. But as they get older, their personalities usually begin to develop in different directions, and with that, they start getting different acquired traits as well.
Are twins that can only be two girls or two boys identical?
No. In order for them to be identical they needed to start off as the same cell and divide so at first their DNA is identical meaning they have the same sex. During development slight changes may occur but the sex always stays the same. Boy-girl twins are always two different cells meaning that they are not identical. The term for boy-girl twins is furturnal. You can however have boy-boy twins and girl-girl twins that are not identical and they are also called furternal. So basically, identical twins start off as one cell that divides and furternal are two individual cells. There is polar body twinning, that's when the egg splits before fertilization, and that can cause a male and a female. This is called semi identical twins or half twins. They share 75% of their genetic markers.
Why are there differences between identical twins?
Although Identical twins look the same and share the same DNA, there are some differences between the two do to there environment and way of life as they develop. However, one way to distinguish between the twins from birth would only be by their finger prints. In other words, identical twins finger prints are different from birth because of there movements within the mothers womb and what they are touching within her womb before they are born.
