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BIO 304 Lecture 13

BIO 304 Lecture 13. What is the name of the inactivated X chromosome in female somatic cells ? 1. Polar body 2. Golgi body ✓ 3. Barr body 4. Lyon body 5. XIST . The DNA of the Barr body is inactive and highly condensed. This type of DNA is more generally referred to as

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BIO 304 Lecture 13

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  1. BIO 304 Lecture 13

  2. What is the name of the inactivated X chromosome in female somatic cells? 1. Polar body 2. Golgi body ✓ 3. Barr body 4. Lyon body 5. XIST

  3. The DNA of the Barr body is inactive and highly condensed. This type of DNA is more generally referred to as 1. nucleosomal ✓ 2. heterochromatin 3. transposable 4. histone 5. heterogametic

  4. Which sequence is NOT an example of repetitive DNA? 1. Satellite DNA ✓ 2. Euchromatin DNA 3. Telomere DNA 4. Small interspersed element (SINE) DNA 5. Long interspersed element (LINE) DNA

  5. Klinefelter syndrome in humans is caused by which chromosomal condition? ✓ 1. 47, XXY 2. 45, X 3. 47, 21+ 4. 47, XYY 5. triploidy

  6. The gene located in a small part of the human Y chromosome that is responsible for determining maleness is called 1. pseudoautosomal region (PAR) 2. X-inactivation center (Xic) ✓ 3. Sex-determining region Y (SRY) 4. Mullerianinhibitingsubstance (MIS)

  7. _________________________ refers to the proportion of each sex that is conceived in a population. ✓ 1. Primary sex ratio 2. Secondary sex ratio 3. X:A ratio 4. dosage compensation ratio

  8. DNA libraries

  9. Producing cDNA from mRNA

  10. Screening a library

  11. Southern blotting

  12. DNA sequencing

  13. Levels of chromatin packing

  14. Heterochromatin

  15. Repetitive DNA

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