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:If the number of chromosomes in the skin cells of…How many chromosomes will be present in a gamete if…How many chromosomes would be in each gamete and…The exchange of genes between homologous chromosomes…One of the following is a process of transmission of…