The sex chromosomes determine the sex of an organism. In humans, it is the 23 pair. Females pass on either or their X chromosomes, while males pass on either their X or their Y. If the male passes on their X chromosome, the resulting offspring is female. If they pass on their Y chromosome, the resulting offspring is male.
I don't think that is known with any degree of certainty. Many factors influence the sex of the baby, including the regularity of intercourse, even the water supply - yes, really; in Liverpool they changed to a new source of water supply and the proportion of male babies rose.
the males X and Y chromosomes and the females X chromosomes
the chromosome of the sperm cell. x is a girl, y is a boy.
its the X and Y chromosomes. XY is what males have, females have XX
No, the male determines the sex of a child.
In humans, which sex chromosome determines if an offspring is a male or female?
The sex of a child is determined by the sex chromosome of the sperm cell (which comes from the father). If it is a Y, the child will be a boy, if it is an X, the child will be a girl.
It depends on which sex chromosome sperm type fertilized the egg. X for female. Y for male.
The generally accepted theory is that males determine the sex because males can donate both an X chromosome or Y chromosome, while females can only donate an X chromosome to their offspring :D Hope this Helped
In humans females are homogametic and males are heterogametic. It is the male biological parent who contributes the sex chromosome that determines the sex of any child.Human females are XX and all their ova carry an X chromosome. Females always give their children an X chromosome.Human males are XY and half their spermatozoa carry an X chromosome and half carry a Y chromosome. Depending on the sex chromosome in its biological father's spermatozoon, a child receives an X or a Y chromosome from its biological father.If a child receives an X chromosome from its father she will be XX and a girl. If a child receives a Y chromosome from its father he will be XY and a boy.
The sex of a child is determined by the sex chromosome present in the father's sperm cell. If he donates an X, the child will be a girl, if he donates a Y, the child will be a boy. The historical or ancestral lineage doesn't have anything to do with the child's sex.
In humans, which sex chromosome determines if an offspring is a male or female?
The sperm from the father can supply either an X-bearing or a Y-bearing chromosome. The egg from the mother can only supply an X-bearing chromosome. An XY combination produces a boy baby. An XX combination produces a girl baby. It might seem that the father therefore determines the sex of the baby, but some recent evidence suggests that the mother can select either an X-bearing or a Y-bearing sperm. See the Wikipedia article on "Maternal influence on sex determination."
Sex-linked traits have alleles that are passed from parent to child on a sex chromosome.
Presence or absence of the Y chromosome
Sex, as in gender, is determined by the sex organs possessed by an individual. Genetic errors and mutations can make it difficult to determine by just this, but more sophisticated methods exist.