Zygote Embryo Muscle cells Intestinal cells Liver cells Blood cells Nerve cell Cardiac cells (1) Specialization occurs, resulting in the formation of a great variety of cell types. (2) Genes are inserted into the zygote to allow for the formation of different cell types. (3) The expression of genes responsible for the different cell types is controlled by the placenta. (4) The genetic information in the zygote is divided to produce a complete set for each cell type

Q: The Mullerian ducts in female mammalian embryos develop into…   a)   The vas deferens   b)   The…

A: During embryonic development, the reproductive system goes through a complex differentiation process…

Q: ......... is not developmental event in human and frog.   After fertilization rapid cycle of…

A: Fertilization is the event that marks the fusion of the female and male gamete which leads to the…

Q: 3. (a) What are the four processes that drive embryonic development? (b) What two processes drive…

A: Embryonic development involves the stages of development from formation of a single celled zygote…

Q: The point mutation in the Bone Morphogenetic Protein receptor 1B (BMPR-1B) appears to have no…

A: The Bone Morphogenetic Protein receptor 1B (BMPR-1B) is a gene that encodes a transmembrane receptor…

Q: The development of sex and gender is a good example of a developmental cascade because:   Group of…

A: Developmental Cascade:  Developmental cascades refer to collective influences on the development of…

Q: What exactly is the zona pellucida? Does it make up the plasma membrane, vitelline layer, AND jelly…

A: Introduction  The extracellular matrix, also known as the ECM, is a three-dimensional network of…

Q: Why is a second polar body expelled after fertilisation?   a)   To remove excess cytoplasm   b)…

A: The second polar body is a small, non-functional cell that is produced during oogenesis after the…

Q: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: The muscular system is the organ system that comprises of body's muscles. These muscles get attached…

Q: What are Embryonic stem cells are used for?

A: ESCs (Embryonic Stem cells) or Human embryonic stem cells are used pluripotent cells which have the…

Q: Virtually all steps of embryological development depend on: a. Alterations in the genome b. Tumor…

A: Embryological development is the growth and development of embryo by  cell division and cell…

Q: 3. During the course of successful prenatal development, a human organism begins as a(n): A) Zygote…

A: The goal of developmental biology is to comprehend how an organism develops—how a single cell…

Q: Why are blastomeres in the pigmented part of the egg smaller and more numerous than in the…

A: The other terms associated with developmental biology include embryogenesis or embryology. This…

Q: Gli3 and distal Hox gene expression Gradual reduction in distal Hoxd dosage Ноxd13 +/+ +/- +/+ +/-…

A: Hox genes specifies the identity of the limb region. It also sepcifies whether a particular…

Q: In Deuterostomes, nutrient molecules (monomers) are taken in to the space between the endoderm and…

A: Option (a) is incorrect because, in Deuterostomes, nutrient molecules (monomers) are taken up into…

Q: THE FATE OF THE 1ST OPENING IN THE PROTOSOMES AND THE 2ND OPENING IN THE DEUTEROSTOMES IS DETERMINED…

A: Introduction  During their embryonic development, animals belonging to the clade of protostomes…

Q: Identify the stem cells found in ovaries of a female embryo/fetus

A: Stem cells are the cells that are special human cells able to develop into many different cell…

Q: which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b)…

A: The mesoderm, or middle tissue, gives rise to most of the muscle and connective tissues. Finally the…

Q: A friend of yours, who is 5 months pregnant, knows you've been studying growth and development. She…

A: X ray is radiology examination of body area, were ionizing radiation are used. As of you know every…

Q: In 2011, 45% of pregnancies in the US were unintended ( Choose ] [ Choose ] Refined wheat flour is…

A: The appropriate matching is given below

Q: S 138. A male newborn has albinism. The most likely cause of the lack of pigmentation in this…

A: The objective of the question is to identify the origin of the cells that are most likely…

Q: The muscular system develops from which embryonic germ layer? a ) Ectoderm B ) Mesoderm D )…

A: The three germ layers are the endoderm, the ectoderm, and the mesoderm. Cells in each germ layer…

Q: The primary germ layer that forms the trunk muscles, heart, and skeleton is (a) ectoderm, (b)…

A: Organogenesis is the process of formation of different organs from the three germ layers, the…

Q: Explain the term trophoblast.

A: An embryo is defined as an organism in the early stages of growth and differentiation, from…

Q: In the cnidaria the ectoderm cells are important because they can react to a stimulus (light) from…

A: Cnidaria possess two layers, endoderm and ectoderm. The gastrodermis, or inner lining, is formed by…

Q: Which two extraembryonic structures form the placenta in humans? a) chorion and amnion b) amnion and…

A: Placenta is the structure formed between the fetus and the uterine lining of the maternal tissue.…

Q: 299. A 3 month infant is brought to the physician because of an upper respiratory tract infection.…

A: Case summary patient is a 3 month infant with upper respiratory tract infection. Complaint of…

Q: How does a single fertilized egg (zygote) give rise to the variety of cell types, organs, and…

A: Zygote is formed via the fertilization of male and female gamete .

Q: Explain the concept of negative feedback using the male reproductive hormones (hormonal control of…

A: As per the guidelines we are supposed to answer only the first question in case of multiple question…

Q: from fertilization through week eight of development, a conceptus is specifically called a: embryo,…

A: Introduction: Human beings reproduce sexually and are viviparous. The reproduction in human beings…