Q1. What is the chromosomal composition of a female with Turner’s syndrome?A. 47, XXYB. 45, XOC. 46, XYD. 47, XYY
Q2. Which scientist used the fruit fly Drosophila melanogaster for genetic experiments?A. Gregor MendelB. Thomas Hunt MorganC. Walter SuttonD. Francis Crick
Q3. Which of the following statements about Down’s syndrome is incorrect?A. It is caused by trisomy of chromosome 21.B. It results in developmental and cognitive impairments.C. It occurs due to the presence of an extra Y chromosome.D. It is a type of aneuploidy.
Q4. Which of the following inheritance patterns is observed in color blindness?A. Autosomal dominantB. Autosomal recessiveC. X-linked recessiveD. Y-linked
Q5. Which trait did Mendel study in pea plants to explain the inheritance of a single gene?A. Seed shapeB. Stem colorC. Leaf textureD. Root length
Q6. Which of the following best describes multiple allelism?A. A gene with two allelesB. A gene with three or more allelesC. Two genes affecting the same traitD. Genes located on the same chromosome
Q7. Which of the following represents a dihybrid cross phenotypic ratio?A. 3:1B. 9:3:3:1C. 1:1D. 1:2:1
Q8. Which of the following statements about linked genes is correct?A. Linked genes are found on different chromosomes.B. Crossing over can separate linked genes.C. Linked genes always follow the Law of Independent Assortment.D. All genes on the same chromosome are always linked.
Q9. Which term describes an individual having two different alleles for a gene?A. HomozygousB. HeterozygousC. HemizygousD. Polygenic
Q10. Which inheritance pattern is followed by Huntington’s disease?A. Autosomal dominantB. Autosomal recessiveC. X-linked dominantD. X-linked recessive