Biology 15.1 Review Use the words below to fill in the blanks. Words will be used only once. Autosomes XX Genome XY Karyotype sex chromosomes pedigree 1. A(n) ________________ is the full set of genetic information that an organism carries in its DNA. 2. A(n) _______________________ shows the complete diploid set of chromosomes grouped together in pairs, arranged in order of decreasing size. 3. The __________________ are the X and Y. Females have ___________ and males have ____________. 4. The chromosomes that don’t determine sex are called _____________________. 5. A(n) __________________ is a chart that shows the presence or absence of a trait over several generations. Short answer: 6. How many chromosomes do humans have in their diploid cells? 7. Why are calico cats always female? 8. Why is colorblindness more common in males? 9. Healthy parents may have children who suffer from Tay-Sachs disease, a genetic disorder. Based on this evidence, is Tay-Sachs caused by a dominant or recessive allele? Explain.