Nitrogenous base, sugar and phosphate
If the sperm gametes that fertilizes an egg has an XX chromosomes, it will form female offspring. X is a female, XY is a female, Y is a male and XX is a female.
In a turbite bed sediments is deposited chronologically.
If the lizard was a less desirable female/male in a time where their gender outnumbered the other and therefore not all of them get a mate.
