Biology 2015 E.C - 2023 G.C 2014 E.C - 2022 G.C Chemistry 2015 E.C - 2023 G.C Civics and Ethical Education 2015 E.C - 2023 G.C English 2015 E.C - 2023 G.C Geography 2015 E.C - 2023 G.C History 2015 E.C - 2023 G.C Physics 2015 E.C - 2023 G.C Biology - Grade 12 -2022 G.C Grade 12 students can now access their exam results by visiting the Educational Assessment and Examination Services (EAES) website. Previous12345678910111213141516171819Next 71. A colour blind daughter can be born when the mother is colour blind and the father is normal. father is colour blind and the mother is normal. mother is carrier and the father is colour blind. father is normal and the mother is carrier. 72. A farmer cut off several regions of a stem near to the buds of a plant. He removed some of the leaves and dipped the cuts end in some hormones rooting powder and planted the cuttings in a compost. He kept the cuttings well watered and within a few weeks they developed their own root system and became new independent plants. Which one of the following is correct about this experiment? The new plants are most probably phenotypically and genotypically different from the parent plant and from each other. genetically and phenotypically identical to the parent plant and to each other. genotypically identical but phenotypically different from the parent. phenotypically identical but genetically different from each other. 73. During DNA replication DNA helicase transports nucleotides that are used to build the new DNA. the base sequence in the new DNA will be slightly changed from the parent DNA. DNA polymerase assembles new nucleotides into a new strand. the parent DNA will become different from the daughter DNA. 74. With four different bases to work with, there are 64 possible triplet codes, but only 20 amino acids are used to make all the different proteins. This is because the DNA code is degenerate code. non-overlapping code. semi conservative code. universal code. 75. If mRNA brings the code "UGA" into the ribosome translation ceases and protein synthesis terminates. tRNA will bring the amino acid methionine. ribosome will initiate protein synthesis. tRNA will bring "UGA" anticodon. Previous12345678910111213141516171819Next We have provided these questions from previous years grade 12 Ethiopian Secondary School Leaving Certificate Examination (ESSLCE) exams with the sole purpose of assisting students in their studies and preparations for upcoming exams. Please be aware that these questions are not indicative of future exam content. Good luck with your studies!