|WikiProject Molecular and Cellular Biology||(Rated Start-class, Top-importance)|
Awful circular definition
This is the worst kind of circular definition, very common in developmental biology:
"A gamete...is a cell that fuses with another gamete during fertilization (conception) in organisms that reproduce sexually."
first of all,a gamete is a sex cell that fuses to make sons and daughters.
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The section on human sex determination is irrelevant and misleading. Although it specifies in humans, it fails to explain the complexity of sex determination across the animal kingdom. If no one disagrees, I would like to remove this section:
In humans, an ovum can carry only an X chromosome (of the X and Y chromosomes), whereas a sperm may carry either an X or a Y; males have the control of the sex of any resulting zygote, as the genotype of the sex-determining chromosomes of a male is XY, and a female's is XX. In other words, because the Y chromosome can only be present in the sperm, it is that gamete alone which can determine whether an offspring will be a male or female.
In it's place I would prefer to put something along the lines of:
In many animals, sex determination is dependant on the gametes of one of the parents. For example, in humans, the male gametes may either carry an X or Y chromosome which, when combined with the chromosomes of the mothers eggs will either result in XX for a female of XY for a male zygote. However this is not the case in all organisms, for example in some birds, it is the chromosomes in the female's zygotes that determine the offspring's sex. Abergabe (talk) 10:37, 6 September 2010 (UTC)
“I am considering developing this page further as part of an educational assignment in Fall of 2013. If someone else is also working on this, please send me a message and let me know soon, so we donʼt duplicate initial efforts in page development.” --E9P2 (talk) 00:44, 7 October 2013 (UTC)