a) the conception classes taken by the parents.
b) the timing of the fertility cycles.
c) the mother's contribution of a Y chromosome.
d) the father's contribution of a Y chromosome.
e) the "law of averages" finally catching up.
2007-02-10 06:44:40 · 12 answers · asked by hottscrogginsbaby 1 in Social Science ➔ Gender Studies
definitely D, because the male sperm cell has XY chromosome combination, and the female egg cell only has XX chromosome combination. If the father's sperm gives the X, then the child shall be female, if the sperm gives the Y, then the child shall be male.
2007-02-10 17:52:50 · answer #1 · answered by navdeepkaur 3 · 2⤊ 0⤋
d) the father's contribution of a Y chromosome.
Simple genetics. Female=XX Male= XY. The mother already comtributes the X chromosome, so the child's sex is determined by the father's sperm.
2007-02-10 10:17:17 · answer #2 · answered by mahoganyaphrodite2004 2 · 2⤊ 0⤋
D - father's contribution of a Y chromosome
2007-02-10 11:36:36 · answer #3 · answered by Anonymous · 2⤊ 0⤋
I'd go with b. A woman's system changes during the month and sometimes it's a better environment for the x chromosome and sometimes better for the y chromosome.
The law of averages doesn't catch up. It's close to 50-50 for every conception.
2007-02-10 08:22:49 · answer #4 · answered by katydid 7 · 2⤊ 2⤋
d. females only have xx. males have xy. which chromosome fertilizes the egg will determine the sex of the baby.
2007-02-10 14:30:17 · answer #5 · answered by Samantha 3 · 1⤊ 0⤋
the father's sperm an XY chromosome finally reached the egg and got it fertilized.
2007-02-10 12:14:27 · answer #6 · answered by Gen 4 · 1⤊ 1⤋
d) the father's contribution of a Y chromosome
women: XX chromosome
men: XY chromosome
2007-02-10 06:49:26 · answer #7 · answered by braich_gal 3 · 4⤊ 3⤋
Fathers dont contribute to y chromosomes.
2007-02-10 06:47:22 · answer #8 · answered by Phlow 7 · 2⤊ 6⤋
believe it or not, it's the mother's uterus that determines the sex of the baby. has to do with the acidic levels in the uterus.
it's all about the ph level in the female's reproductive system!!!
the guys sperm is not the determining factor!!!
2 boys 1 lucky girl, 1 boy birth order.
my mom had more dairy with the girl!
i would say C or E.
do a yahoo search!
law of averages, wouldn't be right, cuz they already had 4 girls, the odds of having another girl are more likely due to the ph level is the female!
2007-02-10 07:18:26 · answer #9 · answered by Lilly 5 · 0⤊ 9⤋
The mother becoming more masculine as she gets older and her vaginal conditions being more favorable to serm carrying the Y chromosome, also being looser and enabling greater penetration which favors the rather more fragile Y-carrying sperm.
2007-02-10 06:50:28 · answer #10 · answered by Feinschmecker 6 · 0⤊ 8⤋