quiz5 - Biol241, Quiz 5 2/12/2010 1) A Drosophila...

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

View Full Document Right Arrow Icon
Biol241, Quiz 5 2/12/2010 1) A Drosophila geneticist has obtained females that carry attached-X chromosomes homozygous for a recessive mutation (y) that causes the body to be yellow instead of gray (The attached-X causes the two homologous X chromosomes to segregate together during meiosis). She crossed some of these females to ordinary wild-type males (y + ). Predict the phenotypes of the progeny from this cross. a) All the daughters are gray and all the sons are yellow b) 1/2 of the progeny are gray and the other ½ progeny are yellow c) All the daughters are yellow and all the sons are gray d) ½ of the daughters are gray and all the sons are gray 2) A woman with X-linked color blindness and Turner syndrome had a color-blind father and a normal mother. In which of her parents did the non-disjunction of the sex chromosomes occur? a) Father b) Mother 3) In a wild type plant, one chromosome has the sequence A B C D E F ( represents the centromere), and another has the sequence M N
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.

This note was uploaded on 03/30/2011 for the course BIOL 241 taught by Professor Henrychang during the Spring '10 term at Purdue University-West Lafayette.

Page1 / 3

quiz5 - Biol241, Quiz 5 2/12/2010 1) A Drosophila...

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