The two normal types of sex chromosomes are? by Sunday | Sep 9 | Biology JAMB | 0 comments A. XXY and XYY B. XX and XYY C. XY and XXY D. XX and XY Correct Answer: Option D – XX and XYY Users Also Read These:How many chromosomes will be present in a gamete if…State three types of saws and two types of planes…If the number of chromosomes in the skin cells of…A plant cell has 14 chromosomes prior to mitosis.…The exchange of genes between homologous chromosomes…