Question

please complete questions 26, 27, 28, and 29.

26.A genetic disorder has different symptoms when inherited from the father tharn when inherited from the mother. Explain why. 27. Who discovered the structure of DNA? A. Watson and Crick B. Watson, Crick, Franklin and Wilkins. C. Watson, Crick and Chargraff D. Chargraff 28. What is meant by female mammals being mosaics? A. Females are more artistic. B. Females are more complex C. Barr bodies represent inactivated maternal or paternal x chromosomes. D. Females have active and inactive versions of the maternal and paternal x chromosomes 29. How is the Z-W system different from the X-Y system? A. The mother determines the sex of the offspring rather than the father B. It is no different except there are different chromosomes involved. C. The father still determines the gender of the offspring, but he uses a Z or a W chromosome The system evolved later in evolutionary history, hence the use of the last letter of the alphabet. D.

Answer 1

26. As each parent contributes a different version of a gene to its offspring, the expression of that gene may be somewhat different from each other.

27. A. Watson and Crick

28. D. females have active and inactive versions of the maternal and paternal X-chromosomes

29. A. The mother determines the sex of the offspring rather than the father