Human Quizzes Online & Trivia

Klinefelter syndrome occurs in about 1 out of every 500 males, having an extra X chromosome. 2 X chromosomes plus 1 Y = XXY. Therefore the XY answer to this question is incorrect.Please review and correct.

The correct answer should be "karyotype". Using karyotype, we can photograph a complete set of chromosomes from a cell during cell division, most efficient during metaphase.

Cystic fibrosis (CF) is caused by a recessive allele. You need to inherit two copies of the faulty allele to have CF. If you just have one copy of the faulty allele, you are a carrier but have no symptoms.If two carriers have a child between them, there is aone in fourchance of that child having the disorder. An example of a dominant single genedisorder isHuntington’s disease,which is a disease of the nervous system.

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Genotype for a female of Turner syndrome can be X or XO, in which the female has less one chromosome than normal female that is 45 X. For the effect, the female looks normal but actually she is sterile.

Involve X and Y chromosome in 23rd pair. For instance, XX is for female. While XY is for male. It can also leads to abnormalities when the number of X and Y chromosomes in human have an addition or missingsuch as XO, XXY

In human, 1 to 22 of the chromosomes are autosomes. And the 23rd pair is for this type of chromosomes.

At the 23rd chromosomes, the genetic disorder that occur is chromosomal disorder.

The Y chromosome is smaller than X. It also has fewer than 200 genes compare to X that has more than 1000 genes.

The Y chromosome, smaller than the X. It also contains far fewer genes. The X has more than 1000 genes, while the Y has fewer than 200

Gene is found only on X chromosome and not in Y. Itis linked to the gender of the individuals. The result is females will have 2 copies while male only have one copy of this gene. If gene is recessive, the males only need one this recessive genes rather than need two recessive genes. This is the reason male exhibit some traits frequently than females. The example of of this type of traitsare hemophilia and colour blind.

The X and Y chromosomes, however, have different genes. So for the genes,males have just one copy of X chromosomes. The Y chromosome has few genes, but the X chromosome has more than 1,000.