Question: Generate because they lack homologous genes on the X chromosome with which to pair up prior to cr…
Show transcribed image text Generate because they lack homologous genes on the X chromosome with which to pair up prior to crossing over. However, when the Y chromosome was sequenced, eight large regions were found to be internally homologous to each other, and quite a few of the 78 genes represent duplicates. (Y chromosome researcher David Page has called it a "hall of mirrors.") What might be a benefit of these regions? SCIENTIFIC INQUIRY Assume you are mapping genes A, B, C, and D in Drosophila. You know that these genes are linked on the same chromosome, and you determine the recombination frequencies between each pair of genes to be as follows: A-B, 8%; A-C 28%; A-D, 25%; B-C, 20%; B-D, 33%. Describe how you determined the recombination frequencies for each pair of genes. Draw a chromosome map based on your data. WRITE ABOUT A THEME: INFORMATION
Generate because they lack homologous genes on the X chromosome with which to pair up prior to crossing over. However, when the Y chromosome was sequenced, eight large regions were found to be internally homologous to each other, and quite a few of the 78 genes represent duplicates. (Y chromosome researcher David Page has called it a "hall of mirrors.") What might be a benefit of these regions? SCIENTIFIC INQUIRY Assume you are mapping genes A, B, C, and D in Drosophila. You know that these genes are linked on the same chromosome, and you determine the recombination frequencies between each pair of genes to be as follows: A-B, 8%; A-C 28%; A-D, 25%; B-C, 20%; B-D, 33%. Describe how you determined the recombination frequencies for each pair of genes. Draw a chromosome map based on your data. WRITE ABOUT A THEME: INFORMATION
