Denver System Worksheet Karyotype Answers

The Denver System is the internationally accepted method for classifying and arranging human chromosomes. It organizes the 23 pairs of human chromosomes based on three primary characteristics:

| Group | Chromosomes | Size & Characteristics | |-------|-------------|------------------------| | | 1, 2, 3 | Large; metacentric (#1 & #3) or submetacentric (#2) | | B | 4, 5 | Large; submetacentric | | C | 6–12, X | Medium-sized; submetacentric | | D | 13, 14, 15 | Medium; acrocentric with satellites | | E | 16, 17, 18 | Short; #16 metacentric, #17 & #18 submetacentric | | F | 19, 20 | Short; metacentric | | G | 21, 22, Y | Very short; acrocentric (21, 22 have satellites; Y does not) | denver system worksheet karyotype answers

Largest chromosomes; typically metacentric (centered centromere). Large chromosomes; submetacentric (off-center centromere). Group C The Denver System is the internationally accepted method

“The karyotype shows three copies of chromosome 21 in Group G, indicating trisomy 21 (Down syndrome).” Group C “The karyotype shows three copies of

The sex chromosomes (X and Y) are not part of a numbered pair. The X chromosome is included in Group C (size similar to #7), and the Y chromosome is in Group G (similar to #21–22 but without satellites).