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

Q: Is the embryonicdevelopment in birds direct orindirect?

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

Q: Should the Genetic Testing of Embryos be Allowed for Parents to Create a Desirable Offspring?

A: Genetic testing of embryos is an amazing innovation accessible just to the individuals who are doing…

Q: Are all of the cell nuclei in the embryo sac haploid or is just the egg haploid?

A: The group of organisms with eukaryotic cells having cell walls and autotrophic nutrition are called…

Q: State the function of homeotic genes. Describe how nurse cells in fruit flies can affect larval…

A: Homeotic genes are a group of genes that control the pattern of body formation during early…

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: Some marine fishes exhibit a spectacular polyphenism, in that individuals can, under special…

A: Sequential hermaphroditism occurs when the individual changes sex at some point in its life and…

Q: Is the mammalianembryonic development director indirect?

A: The process of embryonic development is otherwise known as embryogenesis. Fertilization is the…

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: 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 is the difference between homeotic and Hox genes

A: Thank you for the question  Answer : Homeotic genes : Genes which regulate the formation of…

Q: Why does external fertilization lead to an increase of genetic variation?

A: Reproduction is the biological phenomenon by which offspring are produced by individual organisms.…

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: Which type of cleavage leads to the development of a bird?

A:

Q: how does the  asexually produced individuals move across the landscape?

A: The process by which a new individual is generated from the parents is known as reproduction. Sexual…

Q: Does the difference in gene expression explain the different sexual behaviors of the two species?

A: Gene expression is defined as the process of conversion of information stored in the DNA to the…

Q: Does the distribution of Ca²+ in an egg correlate with formation of the fertilization envelope?

A: During fertilization, sperm-induced rise in cytoplasmic Ca2+concentration.

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: Male parental care occurs in only 7% of fishes and amphibianspecies with internal fertilization but…

A: Introduction  Reproduction is the characteristic of all biological species present on the Earth. All…

Q: For every developmental stage, there is an expected developmental task, what happens when the…

A: Once a child is born, the development of a child to the adulthood also includes the development 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: You want to cultivate truffles for cooking. What is the problem with cultivating a species that only…

A: Ascomycetes is a class of diverse fungi. They include pigmented moulds, powdery mildews, yeasts, cup…

Q: what causes activation of certain genes before fertilization?

A: Fertilization is the process of fusion of male and female gametes for the formation of a zygotes.

Q: What are the differences in the development of plants and animals in terms of the following?

A: The growth patterns of plants and animals vary in many ways as plant body may be gametophytic or…

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

A: ANSWER) (a) expresses, neural plate

Q: According to this picture of embryos (early developmental stages), which two organisms are most…

A: Between all the organisms, some characteristics are similar and some characteristics are same. Based…

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: How is embryology different from developmental biology?

A: During their life cycles;most of the living organisms like plants and animals undergoes various…

Q: What is the difference between direct and indirect development?

A: Development refer to the process of the formation of the adults from the progeny stage. There are…

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: What were the evolutionary pressures that forced the adoption of secondary neurulation as opposed to…

A: The formation of the central nervous system (CNS) is stimulated by the notochord. This process is…

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: Why would paired external fertilization be preferable to group spawning?

A: Fertilization can be defined as the fusion of haploid gametes, egg and sperm, to form the diploid…

Q: What are the consequences of the differences in the yolk amount and distribution of eggs among…

A: The amount and distribution of yolk inside the egg decides the pattern of cleavage. The type of…

Q: What are the advantages and disadvantages of internal fertilization over external fertilization? How…

A: Internal fertilization - It is the fusion of egg and sperm during sexual reproduction inside the…

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: What is the reason behind the event that a zygote receives half of the chromosome from the parents

A: A zygote is a cell formed by the fusion of sex gametes. During human fertilization, sperm from the…

Q: What is the proper term for the group of reproductive cells that pass genes on to the next…

A: Reproductive cells are formed through meiosis. Meiosis is reductional division.

Q: Compare and contrast Ontogenetic vs. Phylogenetic Development

A: Since you asked multiple questions we will answer the first question for you. If you want any…

Q: How is the sex-determination mechanism different in the birds?

A: A sex-determination system is a biological system that determines the development of sexual…

Q: What is indirect development?

A: Development involves the functional and physiological maturation of an individual. It is a…

Q: What is the importance of the pharyngeal pouches in development? Discuss.

A: In embryology, pharyngeal pouch is defines as "any of a series of evaginations of ectoderm on either…

Q: hat happens when the egg is not fertilized

A: Answer: FERTILIZATION : It is the process of fertilize the egg cell of female with sperm cell of…

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…

Q: How does internal fertilization facilitate life on land?

A: Internal fertilization occurs inside the body of a female individual. Mostly internal fertilization…

Q: Why do differentiating cells increasingly lose their developmental potential?

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: Why males, in most of the species, provide no paternal care?

A: Reproduction is the most important life function that is prevalent throughout all organisms. It can…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.