18. Which of the following organisms contains pep A) Bacteria and Eukarya B) Bac
ID: 278583 • Letter: 1
Question
18. Which of the following organisms contains pep A) Bacteria and Eukarya B) Bacteria C) Eukarya D) Prokaryota tidoglycan in the cell wallf? 19. A eukaryotic organism that undergoes alternation of generations in which different generations do not resemble each other morphologically is referred to as A) homomorphic. B) heteromorphic. C) isomorphic. D) anisomorphic. E) gametophytic. 20. Proteins can acquire new functions via A) retrotransposons B) gene duplication. C) bioprospecting. D) biased gene conversion. E) concerted evolution. 21. Copies of genes in the same or different species that are related as the result of gene duplications are known as A) analogs B) orthologs. C) paralogs D) heterologs. E) None of the above Match the following: A) flora 22. Changes in this surface protein of influenza can be used to generate vaccines. B) coincident 23. Suppose the common ancestor of cows and whales had an A at one nucleotide site. At this site, whales have G and cows have T. This would be an example of substitution. C) pseudogene 24. The phenomenon whereby traits may evolve independently in unrelated species because the species are subject to similar selection pressures is known as evolution D) Hemagglutinin 25. A sequence of DNA that arose from a gene duplication and is no longer functional is known as a 26. The entire composition of plants in a given E) convergent locality is known as itsExplanation / Answer
18) The organism which contains the peptidoglycan cell wall are called as prokaryota. They lack the nucleus and have the membrane bound organelles. Hence option (D) is correct.
19) A eukaryotic organism that undergoes alternation of generations in which different generations do not resemble each other is called as heteromorphic. Homomorphic organisms which are resemble to each other.
Hence otption (B) is correct.
20) Proteins can acquire new functions via gene duplication. This is generated though the molecular evolution.
Retrotransposons are the protiens which copy their genome by the help of enzyme reverse transciptase.
Hence otption (B) is correct.
21) Copies of genes in the same or different species that are related as the result of gene duplications are known paralogs.
Hence option (C) is correct.
Match the following:
22) Changes in the hemaglutinin surface protein of influenza can be used to generate vaccines.
23) Suppose the common ancestor of cows and whales had an A at one nucleotide site. At this site, whales have G and cows have T. This would be an example of coincident substitution.
24) The process where the organisms are not closely related (not monophyletic) and whcih independently evolve having the similar traits due to the result of having adapt similar envirnment is called as the convergent evolution. So the phenomenon whre this occurs is called as convergent.
25) A sequence of DNA that arose from a gene duplication and is no longer functional is known as a pseudogene. These are the segments of DNA which lost some functionality so differ from the actual gene.
26) All of the plants living at a particular time or place are called its flotra. The entire composition of plants in given locality is known as the its flora.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.