A C. elegans (nematode) gene called par-1 helps todetermine the AP axis of the animal early in development. Scientists determined that par-1 is pleiotropic—it also has a later function in forming the vulva of theadult animal. How could researchers circumvent thelethality of par-1− mutants to observe the later function of the par-1 gene? (Hint: C. elegans larvae caneat bacteria expressing RNAi for any gene.)

Q: What would be the most likely effect on fruit-fly development of a deletion in the nanos gene?

A: Drosophila melanogaster is a fly species in the family Drosophilidae. This fly is commonly called as…

Q: What is the difference between a maternal-effect gene and a zygotic gene? Of the following genes…

A: Genes are the basic biological unit of heredity. They are a segment of deoxyribonucleic acid (DNA)…

Q: Nanos is a strict maternal-effect gene in Drosophila; that is not transcribed in the embryo.…

A: The phenotypes of embryos with mutations in nanos can vary greatly, so it is important to predict…

Q: When an embryo is homozygous mutant for the gap gene Kr, the fourth and fifth stripes of the…

A: Segmentation in the Drosophila embryo is regulated by pair-rule genes and gap genes.

Q: A number of genes that control expression of Hox genes in Drosophila have been identified. One of…

A: Homeotic genes are the regulatory genes that play an important role in the regulation of the…

Q: <pression of a homeotic gene in the wrong tissue in Drosophila results in the development of an…

A: INTRODUCTION Homeotic gene, any of a group of genes that control the pattern of body formation…

Q: You are interested in the expression of regions of the X chromosome at different times in human…

A: The investigation of the X chromosome at different phases of human fetal development is a complex…

Q: Cats should eat more than once a day. Mention two research articles related to this topic.

A: Introduction: Cats are a domesticated species of small carnivorous mammals that are popular pets all…

Q: Match the following some are  redundant please explain why?: Axis specification Pattern formation…

A: The study of the process through which organisms grow and develop from a single cell to a mature…

Q: If gene transcription is inhibited after fertilization, development past the two-cell stage does not…

A: The difference lies in the distinct developmental processes: gene transcription inhibition halts…

Q: genes relies on the existence of ovoD, a dominant female sterile mutation of the ovo gene, whichis…

A: Hello there! As you have posted multi-part questions, we are answering only the first question. If…

Q: You have generated a new induced pluripotent stem (iPS) cell line.  How would you test for the…

A: RNA-Seq can be used to determine RNA expression levels more precisely than microarrays because it is…

Q: Could Bicoid be a morphogen thatdetermines the anterior end of a fruit fly?

A: A morphogen is a protein whose concentration gradient affects the developmental fate of the…

Q: Gradients of morphogens can be preestablished in the oocyte. Also, later in development, morphogens…

A: A substance whose non-uniform distribution governs the tissue development in the pattern formation…

Q: The early Drosophila embryo is a syncytium. Why is this significant? O a. it allows the segment…

A: The early Drosophila embryo is indeed a syncytium, which means it is a single cell with multiple…

Q: What complications might arise from genetic screens targeting an organ that differentiates late in…

A: The eye has been one of the most intensively studied organs in Drosophila. The wealth of knowledge…

Q: A drug causes the degradation of Cactus protein. What would be the effect of administering this drug…

A:

Q: Match the following transcription factors whose expression during embryonic development leads to the…

A: A. Late expression in the limb bud gives rise to autopod- Homeobox a13( hoxa13) The autopod…

Q: Explain how loss-of-function mutations in the following categories of genes would affect the…

A: Drosophila is also called fruit-fly. It is often used as a model for biological investigations.

Q: Why is drosophila aconvenient animal for thestudy of linked genes?

A: Genetics is the branch of biology, which deals with the study of genes, their pattern of…