Pedigree analysis questions and answers PDF
This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on “Inheritance and Variation Principles – Pedigree Analysis”. Show 1. By which of the following methods, a pattern of inheritance can be traced in a family? Answer: a 2. Which of the following figures depicts an offspring whose sex is unspecified? b) c) d) View Answer Answer: c ii. : Unaffected Female iii. : Sex unspecified iv. : Seven unaffected offspring. 3. Which of the following figures represent parents with a male child affected with
a disease? b) c) d) View Answer Answer: c 4. In the pedigree given below, what does the indicated allele
represent? a) Dominant allele b) Recessive allele c) Moderate allele d) Half allele View Answer Answer: a 5. What should be the genotype of the indicated member? a) AA b) Aa c) XY d) aa View Answer Answer: d 6. Consanguineous mating is the natural mating between two different individuals of the same species which are unrelated. Answer: b 7. Which was the first chemical mutagen? Answer: d 8. Which of the following is incorrect with respect to aneuploidy? Answer: b 9. Which of the following represents nullisomic conditions? Answer: b 10. Which of the following is not an example of aneuploidy? Answer: c 11. Which of the following statements is incorrect with respect to polyploidy? Answer: c 12. Diploids are better for mutation experimental studies. Answer: b 13. Who is the father of Actinobiology? Answer: a 14. Which of the following statements is incorrect with respect to ionizing radiation? Answer: d 15. Which of the following chemical mutagen is both mutagenic to replicating and non-replicating DNA? Answer: b 16. Which of the following mutations is the most common type of mutation? Answer: d Sanfoundry Global Education & Learning Series – Biology – Class 12. To practice all areas of Biology, here is complete set of 1000+ Multiple Choice Questions and Answers. Next Steps:
What is pedigree analysis Short answer?An analysis of inheritance of a trait over several generations of a family is called pedigree analysis. Uses: (i) It shows the origin of a trait and the flow of that trait in a family. (ii) It is used to know the possibility of an expressive or recessive allele which may cause genetic disorder, e.g., colour blindness.
What is an example of pedigree analysis?For example, having a widow's peak hairline is dominant. If an individual has that trait, their symbol on the pedigree will be shaded in. If they have no widow's peak, their symbol will not be shaded in because having no widow's peak is recessive.
What are the five patterns in pedigrees?We will mostly consider five major types of inheritance: autosomal dominant (AD), autosomal recessive (AR), X-linked dominant (XD), X-linked recessive (XR), and Y-linked (Y).
How is pedigree analysis calculated?Reading a pedigree. Determine whether the trait is dominant or recessive. If the trait is dominant, one of the parents must have the trait. ... . Determine if the chart shows an autosomal or sex-linked (usually X-linked) trait. For example, in X-linked recessive traits, males are much more commonly affected than females.. |