ETEA PAST PAPER 2020 ( PART 18 ) 1. The organs which are similar but differ in structure are called Convergent evolution Analogous organs Homologous organs Divergent evolution 2. ____ occurs because natural selection gives some alleles a batter chance of survival than others Fitness Artificial selection Crossing over Evolution 3. The DNA that has been altered and which now contains length of nucleotides from two different organisms is called a Recombinant DNA Plasmid Combined DNA Vector 4. It is a method for rapid production of a very large number of copies of a particular fragment of DNA Polymerase chain reaction DNA extraction Gel electrophoresis Recombination 5. What is the effect of DNA ligase? DNA fragments are joined together DNA replication occurs DNA is broken up at specific sits DNA transcription occurs 6. Which of the following is the components/ tools of recombinant DNA technology? Gene of interest Molecular glue and expression system Molecular scissors All of the above 7. Gel electrophoresis is a technique Collect all the genes found in one complete set of chromosomes Is a technique to separate different size fragment of charge bearing polymers (proteins, RNA or DNA) Grows single cells of a group of cells in a glass ware on artificial medium under aseptic conditions Employed by forensic scientists to assist in the identification of the individuals by their respective type of DNA 8. Transgenic organisms Are considered beneficial to humans Have a foreigh gene inserted into them All of the above Have an important role in the large scale production of medicinal products 9. Which of the following is not necessary for PCR to occur? Ribonucleotides ATP Primers DNA fragments 10. This theory says that “mitochondria and chloroplast area in effect ancient bacteria which now live inside the large cells” Lamarckism Endosymbiont theory Darwin’s theory of evolution Neo-Darwinism Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Ap logoo nay mcqs pory nhidiya hai phy may 54 mcqs hoty hai ap logoo ny 40 diya hai
Thank you, Nayab, for visiting MDCAT1.com! We sincerely appreciate your time and interest in our website. Ji wo is liye k mujhe jo paper mila tha osme itne questions thy. agr apke pas complete hai to kindly bhej de mai upadte krdo ga. Thanks