Q1. Which chromosomal disorder is also referred to as Trisomy 18?A. Down’s syndromeB. Edward’s syndromeC. Patau syndromeD. Turner’s syndrome
Q2. Which scientist's work formed the basis for the chromosomal theory of inheritance?A. Watson and CrickB. Mendel and MorganC. Sutton and BoveriD. Darwin and Wallace
Q3. Which genetic condition is caused by the deletion of a portion of chromosome 5?A. Down’s syndromeB. Klinefelter’s syndromeC. Cri-du-chat syndromeD. Turner’s syndrome
Q4. What type of sex determination system is found in honeybees?A. XY systemB. ZW systemC. XO systemD. Haplodiploidy
Q5. Which of the following statements about polygenic inheritance is correct?A. A single gene controls multiple traits.B. Multiple genes influence a single trait.C. It follows simple Mendelian ratios.D. Polygenic traits show discontinuous variation.
Q6. Which of the following correctly describes a test cross?A. A cross between two dominant individuals.B. A cross between an individual of unknown genotype and a homozygous recessive individual.C. A cross between two heterozygous individuals.D. A cross between two recessive individuals.
Q7. Which of the following represents an example of a test cross?A. Crossing a heterozygous individual with a homozygous dominant individualB. Crossing a homozygous dominant individual with a homozygous recessive individualC. Crossing an individual with unknown genotype with a homozygous recessive individualD. Crossing two heterozygous individuals
Q8. Which term describes an organism with identical alleles for a given trait?A. HeterozygousB. HomozygousC. DiploidD. Hybrid
Q9. Which of the following correctly describes aneuploidy?A. It refers to the complete extra sets of chromosomes.B. It is caused by nondisjunction during cell division.C. It always results in viable offspring.D. It only occurs in sex chromosomes.
Q10. Which of the following statements about mutations is incorrect?A. Mutations can be harmful, beneficial, or neutral.B. Point mutations always result in frameshift mutations.C. Mutations can occur spontaneously or be induced by mutagens.D. Some mutations may lead to genetic disorders.