Question

e. have several chromosomes. team of biologists collects samples from a stream. Using PCR and other techniques umerous DNA sequences. In doing so, they discover many new bacterial species working in the field of niques, they amplify . T a. metagenomics. b. junctional genomics. c.comparative genomics. d. relational genomics. e. proteomics. tarting with Mycoplasma genitalium, how was the minimal genome size of bacteria experimentally ssessed? a. By knocking genes out with transposons; if bacteria survived despite the gene being knocked out, then the gene was an essential gene b. By knocking genes out with transposons; if bacteria could not survive when the gene was knocked out, then the gene was an essential gene. c. By knocking genes out with X-rays,if bacteria survived despite the gene being knocked out, then the gene was an essential gene. d. By knocking genes out with X-rays; if bacteria could not survive despite the gene being knocked out, then the gene was an essential gene e. By adding genes one by one to a bacterium without genes and seeing when the bacterium could survive. comparison with prokaryotic genomes, eukaryptie genomes have a. less DNA. b. fewer protein-coding genes c. a lower proportion of coding DNA relative to the overall size d. fewer regulatory sequences e. fewer repetitive sequences 7. Which feature or property ensures that in the placenta, oxygen will be transferred from the mother's blood to the developing fetus's blood?

Answer 1

8. option b

chimpanzees are human's closest living relative

7. option b

Fetal hemoglobin has a higher oxygen-binding affinity than that of maternal hemoglobin. Fetal red blood cells have a higher affinity for oxygen than maternal red blood cells because fetal hemoglobin doesn't bind 2,3-BPG as well as maternal hemoglobin does.

6. option b

due to the space constraints of packing so many essential genes onto a single chromosome, prokaryotes can be highly efficient in terms of genomic organization.

4. option A

Metagenomics is the study of genetic material recovered directly from environmental samples.