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What else can I help you with?
Why are some twins identical and some not?
The reason why some twins are identical and some are not starts in utero. Identical twins occur when one egg is fertilized and it splits to create two embryos. Nonidentical twins come from different fertilized eggs.
What are the name of 23 chromosomes in human body?
No, there are 46 chromosomes in one cell. A gamete, or sex cell, has 23 chromosomes because during fertilization, the female and male gametes (egg and sperm, respectively) come together to form a new cell with 46 chromosomes
4 chromosome mutations?
Deletion: Part of a chromosome is missing. Duplication: A segment of a chromosome is copied multiple times. Inversion: A segment of a chromosome is reversed in orientation. Translocation: Part of a chromosome breaks off and attaches to another chromosome.
In humans a male has?
One X chromosome and one Y chromosome, which determines male sex characteristics.
What does it mean to say that a gene is linked to a chromosome?
When a gene is linked to a chromosome, it means that the gene is physically located on that chromosome. This means that the gene is inherited along with the chromosome it is located on, and may be inherited together with other nearby genes on the same chromosome.
How do you say twins in Portuguese?
Twins in Portuguese is "gêmeos" for male twins or mixed-gender twins, and "gêmeas" for female twins.
Why do fraternal twins don't have to be of the same sex?
Unlike identical twins, fraternal twins come from two separate eggs each getting fertilized by a separate sperm. Now these sperms can both carry an X chromosome or a Y chromosome giving rise to fraternal twins of the same gender. But at times one could carry the X chromosome and the other could carry the Y chromosome resulting in twins of opposite gender.
Are the Sprouse twins mixed?
milk power
Are fraternal twins usually male?
Not usually, but always.Otherwise they would be sororal or mixed twins!
What gene or chromosome is affected by conjoined twins?
There is no genetic component that results in conjoined twins. They are created by an imperfect separation of identical twin concepti.
How can you have mixed sex twins on sims 2 PC?
**** you
What is Mariah Carey twins mixed with?
Mariah white and black nick is black the twins are half black and white
Do identical twins with opposite genders exist?
Yes, it's possible for a mutation in the chromosome to produce otherwise-identical twins with opposite genders. But generally no, identical twins have the same gender. (but fraternal twins have different genders just as often as any siblings)
Do twins get an extra chromosome from 1 parent?
No. Having an extra chromosome is actually a genetic defect. With twins, let's assume they are identical twins, the mother has one egg cell in the fallopian tube ready to be fertilized by a sperm cell. The sperm cell fertilizes the egg cell, but that egg cell then undergoes mitosis. All of the cell contents are duplicated and the cell divides into two. You now have 2 cells with the exact DNA which are twins. In the case of fraternal twins, the mother had two separate ova in her fallopian tubes and both were fertilized by two different sperm cells.
Why can fraternal twins de different sexes while identical twins cannot?
To keep it simple and not get too technical, fraternal twins are from two eggs and two sperm that independently combine to produce a baby. Identical twins come from a single egg and sperm that divide to create two separate children. Gender is controlled by the males sperm and whether it contains the male genetic X chromosome. Since identical twins have the same sperm their genetic makeup is exactly the same (same egg and sperm used in development). Fraternal twins have two separate sperm and therefore it is possible one has the X chromosome and other does not.
Which comedy starring Bette Midler told the story of twins mixed up at birth?
big buisness
Who is responsible for sex determination in humans the male or female?
When twins are the result of two eggs being fertilized at the same time (non identical twins) there is some evidence to show that there is a genetic basis for this kind of twins. However, it is only their mother that has any effect on the chances of having non identical twins; there is no known mechanism for a father to cause the release of more than one ovum When twins are the result of the zygote splitting into two embryos (identical twins) then this is considered a random act nobody is responsible.
