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Science word for y and x?
x chromosone and y chromosone
Does the mother or the father determine the sex of the offspring?
No, it is the male. The female eggs or ovum only have the x chromosone which develop into a female. The sperm have either an x chromosone or a y chromosone which carries the male sex determination. It is by chance and timing which one fertilized the egg first. If it is a x chrromosone then the offspring is a female. If the y chromosone fertilized the egg, then chemical changes occur resulting in a male fetus. No, it is the male. The female eggs or ovum only have the x chromosone which develop into a female. The sperm have either an x chromosone or a y chromosone which carries the male sex determination. It is by chance and timing which one fertilized the egg first. If it is a x chrromosone then the offspring is a female. If the y chromosone fertilized the egg, then chemical changes occur resulting in a male fetus. It is found in both male and female chromosomes.....found in answer key
What is a human body part that starts with a x?
X chromosone
How are the human sex cells chromosomes labled?
x chromosone and y chromosome
Where genes are located on?
on the chromosone
Why do little people have normal torsos though they have short limbs?
Because it is a deformity in one of the types of cells in your body. just like down syndrome is a deformity of an X chromosone (chromosone 21). that's why every baby that has down syndrome, regardless of the race, look alike
Where are genes located on chromosomes?
on the chromosone
What causes the marfan syndrome?
a change in one chromosone
What is a homologous chromosone?
A pair of chromosomes that have corresponding gene sequences.
How manny genes are on each chromosome?
there are 30000 genes on each chromosone.
What effects of genes are often altered by the?
Environment
What is the role of hormones in human reproduction?
The male is in posession of the Testes, which produce sperm. Sperm can have either chromosone which results in the gender of the baby - X, or Y. You only need one Y chromosone for the child to result in a male, and two X for a female to be produced. There is a 50/50 chance of either. There are fewer sperm carrying X but they are faster than the sperm carrying Y, thus the chances even out. The female 'sex cell' or egg always carrys the X chromosone, thus only two pairings can result; Female - XX Male - XY When the two nuclei of the egg and sperm cell unite, they form the Zygote, which divides and forms stem cells (Unspecialised cells found in the spinal cord in adult life), which specialise as the embryo grows.
