ETHC 210 Exam 2

ETHC 210 Exam 2 Liberty University

Set 1

  1. This scientist was important in that she obtained an x-ray photo of DNA which helped determine its structure:
  2. One way that RNA is different from DNA is that it contains ribose instead of deoxyribose which is part of DNA.
  3. PCR has been used to amplify the DNA from a 7000 year old mummy.
  4. This scientist showed in 1928 that there was a transforming principle in cells:
  5. Meiosis II is also called equational division.
  6. Polyploid cells have extra chromosome sets.
  7. At the conclusion of meiosis I the two cells produced are;
  8. About 30% of chromatin is histone.
  9. A day after fertilization the zygote undergoes the type of nuclear division called;
  10. There are two ways that chromosomes can be arranged to produce Trisomy 21.
  11. Conception is significant in biological developmental science because it involves two physical events which show that it is the starting point for the beginning of life of an individual. The two events which can be found in some embryological text books confirming that conception is the beginning of life are;
  12. Which of the following is true about karyotypes?
  13. Which one of the following trisomy conditions has a 85% survival rate at one year after birth?
  14. During DNA replication a protein called histonase copies the new strand of DNA.
  15. Which of the following are true about genetics testing of the fetus for chromosome abnormalities?
  16. The sugar part of the DNA which makes up the sugar-phosphate backbone is ribose ( or more formally known as deoxyribose).
  17. Centromereswhich are typically found in the center of the chromosomes can sometimes be  found on the end of chromosomes.
  18. Most unborn babies that are autosomal aneuploids go to full term development and are born.
  19. Trisomies are less harmful than monosomies.
  20. Modern genetics and medicine have shown that many types of chromosome abnormalities can occur in the unborn before birth, however because most of these children do not survive in the womb less than 1% of all newborns have chromosomal abnormalities which produce symptoms.
  21. The oocyte is roughly________________ times larger in volume than the sperm.
  22. Meiosis in the female gametes which results in an oocyte is called oogenesis.
  23. Typically a human female will release approximately ________________ oocytes during her reproductive lifetime.
  24. Which of the following is true about gametes?
  25. Individuals with Turner syndrome are missing a chromosome.

Set 2

  1. Which of the following is true about karyotypes?
  2. In order to work with DNA in the lab to look at it sequence a lot of DNA is typically needed since it is so small. Many copies of DNA are made using a process called;
  3. PCR has been used to amplify the DNA from a 7000 year old mummy.
  4. About 30% of chromatin is histone.
  5. Meiosis in the female gametes which results in an oocyte is called oogenesis.
  6. DNA replication is a complex process involving many proteins including a protein which unwinds DNA called helicase.
  7. Klinefelter’s syndrome is characterized at the chromosome level as XYY.
  8. There are two ways that chromosomes can be arranged to produce Trisomy 21.
  9. Trisomy 13 children tend to have more severe health abnormalities than children with trisomy 21.
  10. Which of the following is true about Trisomy 21?
  11. Telomeres are found on the end of chromosomes.
  12. Centromeres which are typically found in the center of the chromosomes can sometimes be  found on the end of chromosomes.
  13. Polyploid cells have extra chromosome sets.
  14. Meiosis II is also called equational division.
  15. DNA is highly condensed and compacted to fit into the cell nucleus. During its condensation process it first wraps around a highly conserved protein called:
  16. At the conclusion of meiosis I the two cells produced are;
  17. The single building block unit of DNA is the nucleotide.
  18. This scientist showed in 1928 that there was a transforming principle in cells:
  19. Modern genetics and medicine have shown that many types of chromosome abnormalities can occur in the unborn before birth, however because most of these children do not survive in the womb less than 1% of all newborns have chromosomal abnormalities which produce symptoms.
  20. Trisomies are less harmful than monosomies.
  21. Homologous pairs of chromosomes line up at the beginning of meiosis I and meiosis II.
  22. The sugar part of the DNA which makes up the sugar-phosphate backbone is ribose ( or more formally known as deoxyribose).
  23. This scientist was important in that she obtained an x-ray photo of DNA which helped determine its structure:
  24. Maternal serum markers and ultrasound findings are used to screen for elevated risk of trisomy in a fetus.
  25. Which one of the following trisomy conditions has a 85% survival rate at one year after birth?
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