Question

Male sell and female shell

Answer 1

Cells in women's bodies have two X chromosomes (XX), while cells in men's bodies have one X and one Y (XY). Thus, we get our male and female cells. Approximately 5% of the human genome resides on these chromosomes -- 1,846 genes on the X and 454 on the Y. This means that male and female cells are fundamentally dissimilar on a genetic level

Answer 2

At first glance, male and female turtles appear very similar, but there are a few ways to help them apart. Unique sexual characteristics differ among species, but there are some traits that can generally help distinguish males from females. Many of these characteristics are relative to each other, so are more evident if you have both a male and female to compare.

Examine the plastron, or shell on the belly of the turtle. If it is concave -- caves inward -- the turtle likely is male. Males climb on the backs of females to mate, so having a shell that is curved in a bit makes for a better fit.