· Question 15 5 out of 5 points In humans, the _____ determines the sex of the offspring because _____. Selected Answer: ... In humans, the male parent determines the sex of the offspring because he produces both X- and Y-bearing sperm. ... Course Hero is not sponsored or endorsed by any college or university. ...
· In humans, males determine the sex of a child. All eggs cells have X-chromosomes, but half of the sperm have Y- chromosomes, and half have X-chromosomes. If a sperm cell bearing a Y-chromosome fertilizes an egg, a male XY child will result; if a sperm bearing an X-chromosome fertilizes an egg a female (XX) child will result.
-The father determines the sex of the baby because the father can donate either an X or Y chromosomes to the offspring. The mother can only donate an X chromosomes. The mother can only donate an X chromosomes.
This preview shows page 2 - 7 out of 18 pages. 6. This determines the maleness in humans. A.Y chromosome in the male gamete. B. 22 pairs of autosomes in the egg cell. C. The Y chromosome in the mother’s cell. D. The X and Y chromosomes in the father’s cell. 7.
the male parentA child's biological sex (male or female) is determined by the chromosome that the male parent contributes. Males have XY sex chromosomes while females have XX sex chromosomes; the male can contribute the X or Y chromosome, while the female must contribute one of their X chromosomes.
The X and Y chromosomes, also known as the sex chromosomes, determine the biological sex of an individual: females inherit an X chromosome from the father for a XX genotype, while males inherit a Y chromosome from the father for a XY genotype (mothers only pass on X chromosomes).
The X and Y chromosomes are called “sex chromosomes” because they contribute to how a person's sex develops. Most males have XY chromosomes and most women have XX chromosomes. But there are girls and women who have XY chromosomes.
Gender is determined by the ratio of the number of X chromosomes to ploidy (or the ratio of X chromosomes to autosome sets).
Males with XYY syndrome have 47 chromosomes because of the extra Y chromosome. This condition is also sometimes called Jacob's syndrome, XYY karyotype, or YY syndrome. According to the National Institutes of Health, XYY syndrome occurs in 1 out of every 1,000 boys.
Klinefelter syndrome affects males only; females cannot have it. Klinefelter syndrome results from a genetic abnormality in which males have an extra copy of the X chromosome. Instead of the usual XY chromosomes, males with Klinefelter syndrome have an XXY pattern.
two sexesBased on the sole criterion of production of reproductive cells, there are two and only two sexes: the female sex, capable of producing large gametes (ovules), and the male sex, which produces small gametes (spermatozoa).
The six biological karyotype sexes that do not result in death to the fetus are:X – Roughly 1 in 2,000 to 1 in 5,000 people (Turner's )XX – Most common form of female.XXY – Roughly 1 in 500 to 1 in 1,000 people (Klinefelter)XY – Most common form of male.XYY – Roughly 1 out of 1,000 people.More items...•
Thus, if one adds up these forms, the outcome is that in humans there are about 15 readily observable gender forms. This number drastically increases in species in which mating is not random, but in which individuals only engage in reproductive activities with a chosen partner.
X and Y chromosomes, however, tell you absolutely nothing about gender identity, which is a vastly more complicated matter. The genes that live on the chromosomes may play some role in determining gender identity—just as they do in determining height and weight and heart disease and athleticism—but it's a limited one.