BIOL 1301 Lecture 8: biol10031903-notes-biology-notes-from-lectures-and-hb-online

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ochreeel360

16 Aug 2018

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Nucleotides building blocks of dna: sugar (deoxyribose) + nitrogenous base (actg/acug) + phosphate group: bases: adenine, cytosine, thymine, guanine. *enzymes can only add nucleotides to 3" end of nucleotides (cid:198) a continuous strand (3" end opened up) and lagging strand (5" end opened up) Lagging strand: rna primer added to individual sections, dna helicase attaches nucleotides in opp. direction of unwinding, rna primer removed + sections (okazaki fragments) joined. Protein synthesis from dna: transcription: dna (cid:198) rna. Initiation: rna polymerase + sigma factor = holoenzyme binds to promoter region of. *open reading frames: sensible transcript w/ start codon and few hundred codons till stop codon. Rna ribonucleic acid: rna: (cid:131) single strand (cid:131) u bonds with t instead of a (cid:131) 2" h instead of 2" oh group. Interphase: non-dividing: g1: normal cell functions, checkpoint for division, synthesis (s): dna replicates (as above) 2 copies of each chromosome, g2: prepares for mitosis, checkpoint to check replication.

Related Questions

The sea otter was hunted to near extinction during the Pacificmaritime fur trade, and its range contracted to a small area inCalifornia. Since hunting was prohibited by international treaty in1911, this species has expanded its range to the north and southalong the Pacific coast. There is no evidence for the role ofevolutionary processes influencing this range expansion. This typeof range expansion is called:

		secular dispersal B)
		dispersal by diffusion C)
		adaptation D)
		jump dispersal

1 points

QUESTION 10

In what way or ways can Darwin

ochremosquito676

if you are a zookeeper charged with distributing additional animals in your institution to other zoos, how do you manage requests for the very popular white alligators you produce? some institution may have to get heterozygotes as you do not have enough white ones to go around.

if you produce your white offspring by mating a two heterozygous individuals, you have lot of normal looking animals to distribute.

a) what are the possible genotypes of these wild-type alligator babies you have?

b) explain how you could determine the genotype of these normal individuals?

The response of a center-surround cell

a)	can be altered only by light falling into the center of the cellâs receptive field.

b)	is not influenced by whether the light falls into the center of the cellâs receptive field or the periphery.

c)	tends to be in one direction (e.g., increased firing) if the stimulation is in the center of the cellâs receptive field and in the opposite direction (e.g., decreased firing) if the stimulation is in the periphery of the receptive field.

d)	is determined either by activation in the center of the cellâs receptive field or by activation in the periphery, but not both.

BIOL 1301 Lecture 8: biol10031903-notes-biology-notes-from-lectures-and-hb-online

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