TLS Online TPP Program

#Question id: 4761


which of the following statements about a lethal allele is not correct?

#Unit 8. Inheritance Biology
  1. lethal alleles are always recessive.

  2. lethal alleles may have a late age of onset.

  3. lethal alleles may be caused by mutations in essential genes.

  4. lethal alleles may affect one individual differently than another