Chapter 7 Worksheet

Chapter 7 Worksheet - Chapter 7: Linkage and Recombination...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 7: Linkage and Recombination _______________________ are genes that are located on the same chromosome so they do not assort independently (and therefore do not follow Mendelian genetics). Instead, we look at the _________________________ between the genes to determine the frequency of phenotypes in offspring. To tell if genes are linked or not, a chi-square test can be performed on a testcross that you would expect to see a 1:1:1:1 ratio if the genes were not linked. If your chi- square fails, then your genes are not assorting independently and are therefore linked. A geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation spastic (sps) and determines that spastic is due to an autosomal recessive gene. She wants to determine if the spastic gene is linked to the recessive gene for vestigial wings (vg). She crosses a fly homozygous for spastic and vestigial traits with a fly homozygous for the wild-type traits and then uses the F
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

Chapter 7 Worksheet - Chapter 7: Linkage and Recombination...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online