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In humans what gender is determined?
In humans, gender is typically determined by the combination of sex chromosomes received from the parents. Males typically have one X and one Y chromosome (XY), while females have two X chromosomes (XX).
What are the differences between autosomes and sex chromosomes?
Autosomes are the chromosomes that are not the sex chromosomes. 22 of the 23 pairs of human chromosomes are autosomes and the final 23rd pair are the sex chromosomes, one of each received by the offspring by the parental generation (one from the mother and one from the father). Moreover, the sex chromosomes dictate the sex of the offspring; males have XY and females XX in most cases, but as long as there is a Y chromosome, the offspring is considered a male.
In Jacob syndrome did the nondisjunction occur in the mother or father?
Jacob syndrome, 49XYY, has to occur as a result of nondisjunction in the father. The Jacob Syndrome male would have received the X chromosome from his mother, and both Y chromosomes from the father (since the Y chromosomes can not possibly have come from the mother). Jacob Syndrome can be the result of nondisjunction in meiosis.
What determines sex?
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.
Explain how the type of chromosome results in some children being male and others being female?
A child's gender is dependent on which chromosome (X or Y) is received from the father. The mother has the chromosomes XX and the father has XY. Each parent randomly gives the child one of their respective chromosomes (through meiosis). The mother gives one of her two X chromosomes and the father gives either the X or the Y. If the father gives a copy of his X chromosome, the baby is a girl. If the father gives his Y chromosome, the baby is a boy.
What is the name given to a pair of chromosomes of which one was received from mom and the other was received from dad?
Paternal chromosomes = from dadMaternal chromosome = from mom
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