Concept explainers
Interpretation:
The behavior of the normal nematodes and the transgenic nematodes in presence of attractant should be determined.
Concept introduction:
The olfaction can be defined as the sense of smell. The sense of olfaction depends on the different chemicals and its binding to the corresponding neural receptors, generating a neural sensation in animals.
Answer to Problem 1P
The transgenic nematode would avoid the attractant and the normal nematode will be attracted to it.
Explanation of Solution
Given:
The neuron AWA express receptors, to which the normal nematodes are attracted. Another neuron AWB express receptors, which is avoided by nematodes. A transgenic nematode is made, in which the receptors for the attractant is produced by AWB, not AWA.
Explanation:
In the case of normal nematodes, the attractant molecules would excite the AWA, so they would be attracted. In the case of transgenic nematodes, the attractants would produce an opposite response, as the receptors for the attractants would be AWB. The message transcribed the AWB neuron would generate a message that this substance should be avoided. So, the behavior of the nematodes would be avoiding attractant.
Want to see more full solutions like this?
- True or False? p21 inhibits the S-cyclin/S-Cdk complex.arrow_forwardQuestion:- Arrange the following organisms, in terms of percentage of their genes that are alternatively spliced, from highest to lowest. brewer's yeast streptococcus pyogenes gorillas cricketsarrow_forwardthe effect of bpa on STAT1 and STAT3 phosphorylation in RAW264.7 cellsarrow_forward
- THOUGHT QUESTION Imagine we identify a gene that is directly responsible for the effects of vasopressin on male mammals, including humans-we will call it trust1-that leads to the production of a vasopressin receptor in the brain, which we will call TRUST1. There are different versions of trust1, all of which lead to different levels of the behavior associated with this neuropeptide on male behavior. Give some examples where it would be a good idea to know a particular males genotype-that is, which of the trust1 genes he has. Give an example of when you think science has gone too far and this information should not be known.arrow_forwardYes or no? during in situ hybridization for signal development the beta galactosidase is used.arrow_forwardtrue or false? And why it is false For the actin cytoskeleton, diverse cell-surface receptors trigger global structural rearrangements in response to external signals. But all these signals seem to converge inside the cell on a group of closely related monomeric GTPases that are members of the Rho protein family—Cdc42, Ras, and Rho. The same Rho family proteins are also involved in the establishment of many kinds of cell polarity.arrow_forward
- Disease Process of Covid-19arrow_forwardTrue or False? Eukaryotic genomes are organized into operons; each operon consists of a series of genes which code for enzymes involved in a metabolic pathway, under the transcriptional control of a single promoter sequence .arrow_forwardCentral Dogma of Molecular Biology from DNA to RNA to Protein, discussing the principles underlying the transfer of information in a biologic system and its regulation. However, recent research seems to challenge certain aspects of Crick’s Central Dogma. Does the Central Dogma still stand today? If not, can you find an example for a type of information transfer that is not explicitly covered by the Central Dogma (or even violates it)?arrow_forward
- Homozygosity for extremely rare mutations in a humangene called SCN9A cause complete insensitivity topain (congenital pain insensitivity or CPA) and a totallack of the sense of smell (anosmia). The SCN9A geneencodes a sodium channel protein required for transmission of electrical signals from particular nerves inthe body to the brain. The failure to feel pain is a dangerous condition as people cannot sense injuries.The SCN9A gene has 26 exons and encodes a1977-amino acid polypeptide. Consanguineous matings in three different families have resulted in individuals with CPA/anosmia. In Family 1, a G-to-Atransition in exon 15 results in a truncated protein that is898 amino acids long; in Family 2, deletion of a singlebase results in a 766-amino acid polypeptide; and inFamily 3, a C-to-G transversion in exon 10 yields a458-amino acid protein.a. Hypothesize as to how each of the three SCN9Amutations affects gene structure: Why are truncatedproteins made in each case? b. How would you…arrow_forwardgenetics question please explain We know that multiple genes (some with many different alleles) contribute to skin color, but genes alone donot account for the diversity of pigmentation we see among humans; environmental factors play a role. b) Propose an explanation for how one of these factors could alter the expression of skin color genes.arrow_forwardBinding of --------- identifies the decoding center of the ribosome.arrow_forward
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage LearningBiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning