Which of the following sets of genes are most likely to have pleiotropic effects? Transcription factor genes Metabolic pathway genes Pigmentation genes Circadian rhythm genes
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Which of the following sets of genes are most likely to have pleiotropic effects?
Transcription factor genes
Metabolic pathway genesPigmentation genes
Circadian rhythm genes
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- What is NOT an example of antagonistic pleiotropy? A. Developmental genes that code for greater or fewer than seven cervical vertebrae have negative fitness costs. B. Genes that create insect breathing tubes cause decreased production of growth hormones. C. Mutations that confer resistance to Bt also make insects more vulnerable to natural plant defensive chemicals. D. Two of the three choices are correct.Which of the following traits or diseases is(are) determined bynuclear genes?A. Snail coiling patternB. Prader-Willi syndromeC. Leber hereditary optic neuropathyA mutation in the gene "tan" in fruit flies results in a lack of pigmentation. The same mutation also negatively impacts vision in flies, and also alters the pheromones produced by the flies. Based on this information, this mutation can be called ... epistatic pleiotropic partially penetrant co-dominant All of the above
- If a fruit fly experienced a mutation that made it homozygous in both the brown and sepia genes, what would be its eye color? options: no eyes pink white redWhich of the following mutations cannot be inherited by a person's biological children? A mutation that the person inherited and is in all their cells A mutation that is in a gamete but none of the body cells A mutation that is in a body cell but none of the gametesIn Figure 20-5, note that the difference in survival rates between AS and AA genotypes declines as children get older. Offer one possible explanation for this observation
- The combination of genes present in the cells of anindividual is called the ___________.Honey bee workers from a colony in North Carolina are visiting two food sites, A and B, at 6 am as shown below. Site A is 1500 m from the hive; site B is 300 m from the hive. Which of the following statements is true regarding the genetic basis of the bees’ ability to track the passage of time and compensate for the movement of the sun? a. The bees’ clock mechanism is based on the Amfor gene, which causes a build up of AMFOR protein in the corpora pedunculata that activates the Gp9 and UU genes, whose products degrade AMFOR in a 24 hour cycle. b. The bees’ clock mechanism is based on the per gene in the optic lobes, whose activity has a 24 hour cycle regulated by the dbt and tim genes. c. The bees’ clock mechanism is based on alternating expression of two alleles for the for gene in the subesophagael ganglion: the R allele which is active at night and the s allele which is active during the day. d. The bees’ clock mechanism is based on levels of eclosion hormone released from…The most common phenotype of a Drosophila fly in nature is called Choose 1 answer from below: wild type. wildebeest. wild thing. a and b, but not c None of the above
- . Certain people are able to taste the chemical phenylthiocarbamide (PTC) when it is present in wet filter paper. These people are called 'tasters'. Others are unable to detect PTC and have the 'nontaster' phenotype. PTC tasting is an example of variation in sensory perception, and the genetic basis is thought to be rather simple. The ability to taste PTC is attributed to a dominant allele, denoted T, located on chromosome 7. The recessive allele is designated t. From analysis of pedigrees, 259 taster children and 278 non taster progeny were observed where one parent was heterozygous and could 'taste' PTC and the other parent was a 'nontaster'. Does this data set support the suggestion that his variation is due to a simple Mendelian pattern?state the genetic behavior of the wild parental honey bee queen and workerWhich of the following statements concerning genes are true? Select all that apply. A gene is a segment of DNA that determines a certain trait.A gene is a segment of DNA that determines a certain trait. An allele is a variation of a given gene. Genes contain information that codes only for proteins involved in the regulation of gene expression.Genes contain information that codes only for proteins involved in the regulation of gene expression. Genes are not responsible for the expression of traits.Genes are not responsible for the expression of traits. Allele variations are due to small changes in the nucleotide sequence within the gene that sometimes change the structure of a protein and ultimately its function.Allele variations are due to small changes in the nucleotide sequence within the gene that sometimes change the structure of a protein and ultimately its function.