What is the difference between homeotic and Hox genes

Q: List the advantages of evolving a deuterostome pattern of development.

A:

Q: Is the embryonicdevelopment in birds direct orindirect?

A: Animal developmental process can be direct or indirect. Direct development: It refers to the…

Q: Why does the dispersion or contraction stage of the developmental cycle assume a complex character

A: Family development is a notional methodology for the orientation of the research and set an abstract…

Q: What primary germ layer gives rise to the notochord? What is the function of the notochord?

A: Notochord It is a flexible, rod shaped body found in embryos of all chordates.

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: Is the degenerating blastocoel visible in the frog gastrula?

A: FROG GASTRULA:         The initial stage of multicellular embryo comprises of two or more germinal…

Q: What are the types of enzymes found in virions and their functio

A: Virion : The complete , ineffective form of virus outside a host cell , with a core of RNA and…

Q: hat parts are persistent throughout the development of the sea urchin embryo? Why are these present…

A: A multicellular animal arises from a single cell a fertilized egg. During development ,the cell…

Q: What are homeotic genes and what is the “homeobox” contained in such genes?

A: A gene can be defined as the physical and functional unit of the hereditary. Genes consists of…

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

A: Morphogens:          A substance that standardize a graded distribution and elicit distinct cellular…

Q: what is the chromosomal system for determining sex in mammals?

A: Chromosomal determination of sex It is also known as allosomic determination of sex and is based on…

Q: What are the roles of Hox genes in the development of Nervous System

A: Hox genes are the genetic switches that are involved in turning on and turning off other genes as…

Q: Where is the egg found in seed plants?

A: Seed plants are a group of plants. Gymnosperms and angiosperms form the group. Their seeds have…

Q: What are the notable features of the fetuses of penguin, panda, and snake that they have in common?

A: Vertebrates include five major classes i.e., Pisces, Amphibia, Reptilia, Aves, and Mammalia. They…

Q: State the neuromere origin of each brain region?

A: Introduction Neuromeres Are Known As The Segments Of The Neural Tube That Forms The Embryonic Brain…

Q: What is Sonic hedgehog, and why it is important?

A: A gene is the basic physical and the functional unit of heredity. Genes are made up of the DNA. Some…

Q: What is the Effect of Castration on Nervous System of the Mammalian Male

A: Introduction Castration is any surgical, pharmacological, or other procedure that causes an…

Q: How is the avian feather formed? What patterns the placement of the feather bud placodes?

A: To define patterns the placement of the feather bud placodes

Q: What are the modifications that are observed in birds that help them fly?

A: Birds are the group of vertebrate animals. They belong to the class Aves and phylum Chordata. They…

Q: Which of the following are documented effects of Hox genes? Choose all that apply.  Group of answer…

A: Hox Genes are the homeotic genes which regulates the development of the specific body organs,…

Q: How do the two kinds of mammalian reproductive cycles— estrous and menstrual differ?

A: Fertility is more tightly regulated in the female then males. Female placental mammals have one or…

Q: What is the evolutionary significance of parthenogenesis in the class insects?

A: Parthenogenesis is a type of asexual reproduction in which the offspring develops from unfertilized…

Q: What are the differences of dogs from other kingdoms?

A: Identification :  Whittaker proposes 5 kingdom classification based upon cell structure,…

Q: What  similarities  do  the  illustrations  have?  What are the differences?  What trends do you see…

A: Comparing different embryonic stages of different animals is a tool that can be used to infer…

Q: Which letter is pointing to the female Ascaris?

A: Kingdom Animalia is a vast kingdom which comprises of animals.  It is divided into vertebrates and…

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: In frog neurulation the notochord _______ the formation of the _______ in the ectoderm next to it.…

A: ANSWER) (a) expresses, neural plate

Q: Why is it more difficult to determine the sex of a newlyhatched canary than a newborn puppy?

A: A sex-determination mechanism is a physiological system that controls how an organism's sexual…

Q: What is an adpative trait in the toad environment? smaller legs

A: “Adaptations are traits that developed to perform a certain function and allow organisms to thrive…

Q: In embryos with spiral cleavage the 4d cell gives rise to which germ…

A: INTRODUCTION Mesoderm It is a germ layer formed during gastrulation. Present between ectoderm and…

Q: Which of the following organisms would have 4 copies of the Hox genes?     lancelets     lamprey…

A: Hox genes are also known as homeotic genes . Hox genes code for transcription factor that play…

Q: are the essential similarities and differences between the development of sperms and eggs in mammals

A: Both sperm and ovum are haploid having 'n' number of chromosome.  Both undergoes mitosis as well as…

Q: How are the mammalian Hox genes related to the homeotic genes of Drosophila?  How do the Hox genes…

A: Hox genes are found in bilateral animals including Drosophila and humans. Hox genes are a subset of…

Q: What are the differences in the life cycle of mosquitoes and butterflies?

A: In some animals, the young ones are different from their adults. There are many features that are…

Q: What is a potential result of injecting notochord tissue into the ventral (bottom) region of the…

A: Option B

Q: How does von baer's law of development relates with the development of the frog embryo? evidences?

A: Von Baer's laws of development These are rules proposed by Karl Von Baer. The laws demonstrates the…

Q: How many chromosomes do snakes have?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: What are the genes and proteins involved in the formation anterior-posterior axes in bugs? www m ww…

A: Anterior means that front and posterior means that back. Anterior Posterior Axis is usually a…

Q: What genes are these Hox proteins regulating?

A: The Hox genes are special types of genes that involve the transcription factor gene. The expression…

Q: What is the function of the Pax 6 gene in the mouse eye reference to HOX gene

A: During early embryonic development, homeodomain proteins regulate gene expression and cell…

Q: Is parental care of a species a factor that affects embryological development? If so, how?

A: Embryological Development -- Embryological Development also called as Embryogenesis a complicated…

Q: Question #1 What is importance of pharyngeal pouches in development? Question #2 What duct empty…

A: Bile is a type of fluid that is made and released by the liver. Bile is stored in the gallbladder.

Q: Give an analogy on how the concepts of determination and differentiation are seen in personal events…

A: During the early embryonic development  , the cells are said to be totipotent because of their…

Q: Which of the following will NOT induce a second body axis in a host embryo? a. Transplanting a…

A: In developmental the expression of specific sets of genes usually determines the three axes of the…

Q: What factors determine the genome size of the symbionts ofmarine invertebrates?

A: They form partnerships between invertebrate animals and chemosynthetic bacteria and are now said to…

Q: What evolutionary changes occur to the egg covering between external and internal fertilization?…

A: Life first evolved with external fertilisation and later on internal fertilisation. Since, external…

Q: What are the physical similarities exist between each of the embryos? How does the pattern of…

A: Introduction: Evolution refers to the change in the species with time. Every single species living…