Standard 2f Preknowledge
2f) Students know the role of chromosomes in determining an individual’s sex.
CALIFORNIA FRAMEWORKS SUMMARY:
The normal human somatic cell contains 46 chromosomes, of which 44 are pairs of homologous chromosomes and 2 are sex chromosomes. Females usually carry two X chromosomes, and males possess one X and a smaller Y chromosome. Combinations of these two sex chromosomes determine the sex of the progeny.