What experimental evidence demonstrates that molecular gradients in the egg control development?

Q: Where are Drosophila melanogaster found?

A: Drosophila belongs to the family Drosophilidae, whose members are commonly called as small fruit…

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: Do genetic differences ever occur in asexually reproducing organisms? If so, how?

A: There are two different modes of reproduction namely, asexual reproduction and sexual reproduction.…

Q: At which stage of development does the Id protein function? Why is its function important?

A: Inhibitor of DNA binding (ID) proteins are a family of highly conserved transcriptional regulators…

Q: eve stripe 2 reporter A B Hunchback C D 6999 Kruppel E F D In the early Drosophila embryo, the…

A: Option b: No reporter gene expression. This option is correct or incorrect because the krupple…

Q: With regard to development, what are the roles of the maternaleffect genes versus the zygotic genes?…

A: Maternal-effect is a phenomenon in which the phenotype of the offspring is defined by the genotype…

Q: Who discovered Drosophila melanogaster?

A: Drosophila belongs to the family Drosophilidae, whose members are commonly called as small fruit…

Q: Explain how an understanding of cell lineages in Caenorhabditis elegans aids in the identification…

A: Step 1 Caenorhabditis elegans is a free-living nematode that has two sexual forms a self-fertilizing…

Q: Explain how egg rotation and gravity determine anterior posterior patterning in chick embryos

A: Anterior posterior pattern formation is the regionalization process in which specific areas of cell…

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: What is meant by “induction” in embryology? Describe the famous organizer experiment of Spemann and…

A: Embryonic development refers to the development and formation of the embryo. It is characterized by…

Q: Figure 13-7 illustrates the expression of the Ultrabithorax(Ubx) Hox protein in developing flight…

A: The Hox genes were linked to the diversification of animal plans' evolution. Regulatory changes in…

Q: Explain how Hox gene expression affects vertebrate development.

A: Hox genes are a set of transcription factor genes that are responsible for the development of…

Q: what is celluar cleavage thats occur in the early stages of development?

A: The development of an embryo is characterized by the process of cell division and cellular…