Body organs first begin to form and function during theperiod of the _________ ; within 6 months, during theperiod of the________ , the organs are sufficientlyfunctional to allow a good chance of survival.a. zygote; embryob. zygote; fetusc. embryo; fetusd. placenta; fetus

Q: BMPs are released from the ___________ blastula-stage embryo?     a. dorsal     b. ventral     c.…

A: BMPs (bone morphogenetic proteins) are a family of signaling molecules that play important roles in…

Q: At which stage of embryogenesis, major patterns of the internal tissues of the embryo have been…

A: Embryogenesis It is defined as a process which occurs after the process of fertilization of an…

Q: The mesoderm gives rise to   a. structures derived from epidermis, such as hair, feathers, nails,…

A: The process called gastrulation is the most characteristic event occurring during the third (3rd)…

Q: During the _________ stage of labor in mammals, the placenta isexpelled from the uterus.a. firstb.…

A: Mammals exhibit internal fertilization during which the egg released by the female is fertilized by…

Q: What a cell or tissue will normally develop into during development A. Cell Fate B. Competence C.…

A: Cells and tissues go through a number of complex processes during development that ultimately result…

Q: For pattern formation to occur, the cells in the developing embryo must a. “know” their position…

A: The embryo formed after the fusion of the male and female gametes is the basis of the development of…

Q: About 2 weeks after birth, a neonate began to vomit shortly after feeding. Each time, the vomitus…

A: Vomiting in neonates is common and most of the time it is insignificant or unimportant. Vomiting in…

Q: Premature babies born before the 26th week of gestation develop physiological problems because…

A: Fetal development within the womb is called prenatal development. It is a process that occurs in…

Q: . The ability of one embryonic tissue to influence the development ofanother tissue is calleda.…

A: Development biology is the branch of biology that deals with the growth and development of living…

Q: Which of the following rows correctly identifies the development of the germ layers? Select one:…

A: The germ layers are an embryonic collection of cells that aid in the creation and development of…

Q: At the end of the 3rd month (12th week) of intrauterine life one of the following is not yet…

A: Fertilization is the process by which the male gamete (sperm) fuses with the female gamete (egg)…

Q: When does an embryo become a fetus? Select one: a. When gastrulation forms the three primary germ…

A: At the end of the 8th week after fertilization (10 weeks of pregnancy), the embryo is considered a…

Q: Which of the following extra-embyonic membranes become the embryonic portion of the structure…

A:

Q: Which of the following is generated by the totipotent fertilized egg, but not by the pluripotent…

A: Stem cells are specialized cells in humans which have the capacity to develop into different cell…

Q: During embryonic development 2 mammary cords appear on the surface of the ventral skin. Along these…

A: Mammary cords are structures that appear during embryonic development on the ventral skin. They…

Q: If cells from the presumptive neural ectoderm of a frog gastrula are transplanted onto the surface…

A: The gastrula formation occurs during the early stage of cell development. During gastrulation the…

Q: The development of a zygote into a baby involves pre-embryonic development for the first 2 weeks,…

A: Introduction: Prenatal development occurs in three major phases. The first two weeks following…

Q: Which of the following extra-embryonic membranes becomes the embryonic portion of the structure…

A: Extraembryonic membrane are the extra membrane that are formed outside the growing embryo . There…

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…