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:A plant cell has 14 chromosomes prior to mitosis.…LIN 309 Theory Question: Distinction Between…In man haemophilia is recessive and sex linked, The…What will be the chromosome number of the hybrid of…Assuming that ‘A’ is gene for normal skin and it is…