Moderate

Sickle cell anemia and phenyl ketonuria are well known examples of:

Correct answer: A. Point mutations

  • A. Point mutations
  • B. Chromosomal aberrations
  • C. Chromosomal mutations
  • D. Non-disjunction

Explanation

These genetic disorders are consequence of a change in the nucleotide sequence of DNA which results in a change in amino acid sequence of proteins and as a result the function of that associated with that protein is stopped.

Last updated

About Inheritance

Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.

Practise Inheritance

1,238 free Inheritance MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Biology questions like this

Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions