BIO 123 Week 6, Patterns of Genetic Inheritance – Questions and Answers Latest Update Graded A+

BIO 123 Week 6, Patterns of Genetic Inheritance – Questions and Answers Latest Update Graded A+. Both parents are heterozygous for the autosomal recessive cystic fibrosis disease. If three children in a row were born with cystic fibrosis, what are the chances that the next child will have cystic fibrosis? Select one: a. 25% ! b. 50% c. 75% d. 100% e. 0% The correct answer is: 25% What procedure involves the insertion of a long needle into the uterus to remove fluid to perform a genetic test? Select one: a. amniocentesis ! b. chorionic villi sampling c. phenotype analysis d. preimplantation genetic diagnosis e. testcross Page 1 of 9 Question 3 Correct Mark 1.00 out of 1.00 Question 4 Correct Mark 1.00 out of 1.00 Question 5 Correct The correct answer is: amniocentesis What type of disorder would be depicted in this pedigree above? Select one: a. autosomal dominant b. incomplete dominance c. due to multiple alleles d. autosomal recessive ! e. codominant The correct answer is: autosomal recessive If a woman is a carrier for the X-linked recessive colorblindness and her husband is normal, what are their chances that a son will be colorblind? Select one: a. 25%, since the mother is a carrier b. 100% because the mother has the gene c. 50%, since the mother is a carrier ! d. None, since the father is normal e. None, since he will be also a carrier The correct answer is: 50%, since the mother is a carrier Page 2 of 9 Correct Mark 1.00 out of 1.00 Question 6 Incorrect Mark 0.00 out of 1.00 An organism with two identical alleles for a single trait is considered ________. Select one: a. phenotype b. genotype c. homozygous ! d. gene locus e. heterozygous The correct answer is: homozygous What type of disorder would be depicted in this pedigree above? Select one: a. due to multiple alleles Page 3 of 9 Question 7 Incorrect Mark 0.00 out of 1.00 a. due to multiple alleles b. codominant c. autosomal recessive d. autosomal dominant e. incomplete dominance " The correct answer is: autosomal recessive