Q: After fertilization the blastocyst develops three germ layers. Which germ layer is the innermost…
A: In the human embryo , after about three days of fertilisation,the zygote forms a solid mass of cells…
Q: Which is a triploid tissue? How is the condition achieved in a fertilized ovule?
A: Anther produces pollen grains which lands on the stigma of the pistil with the help of biotic and…
Q: What are the major features of embryonic development at various months of pregnancy?
A: Within twenty hours after the fertilization, the zygote starts to divide rapidly into many cells.…
Q: What happens to placenta after the birth of the baby?
A: The process of physical expulsion of the fetus and placenta from the uterus is called labor or…
Q: Which structures develop from the neural tube and somites?
A: the structures that develop from the neural tube and somites are :
Q: What are the major events that occur from fertilized egg to birth?
A: Fertilization is the process of fusion of the male gamete (sperm) with the female gamete (ovum) to…
Q: What is the main stimulus for the secretory phase of the endometrium?
A: Endometrium is the inner lining of uterus made of columnar epithelial cells. Its part of female…
Q: List the steps in oogenesis.
A: The process of differentiation of the egg-cell which is a type of gametogenesis is known as…
Q: What is the difference between internal & external fertilization?
A: The process in which a male gamete commonly known as sperm that is released by the male reproductive…
Q: Explain the Human embryo at beginning of fifth week ?
A: The time between conception and birth of a baby is called the gestation period. A normal gestation…
Q: What is internal fertilisastion?
A: Fertilization is the process by which male and female gametes are fused together, initiating the…
Q: What happens if the fallopian tubes are partially blocked and the ovulated eggs are prevented from…
A: The fallopian tubes are two thin tubes located on each side of the uterus. It is the site of…
Q: What is the entire process of oogenisis?
A: Oogenesis is the formation of a mature female gamete called ovum in the ovary. It is one of the…
Q: What are some examples of genetic conditions and teratogens thatcause birth defects?
A: The term genetic refers to the genome present in the cells of an organism. Genome is the complete…
Q: Describe the various stages from oogonium to mature ovum?
A: Sexual reproduction includes the production of male and female gametes and their fertilization.
Q: How is a fetus usually positioned in the uterus as birth nears?
A: Answer: Introduction: The place of the baby in the uterus is known as the presentation of the fetus.…
Q: What fertilized egg; enters 2 week period of rapid cell division?
A: Male and female gametes are called sperm and egg cells, respectively. For reproduction to occur, a…
Q: What is ovum?
A: The fusion of the sperm and the egg is what brings about the formation of the zygote, which will…
Q: How is labor induced if a woman’s pregnancy extends past her due date?
A: Labor is a term used for the pain experienced by a woman before parturition. Hormonal actions result…
Q: How does a morula differ from a blastocyst?
A: Morula Vs Blastocyst: Morula stay distinct from a blastocyst, in which a morula (3-4 days…
Q: How does oogenesis produce egg cells?
A: Oogenesis is a type of gametogenesis that results in the production of female gametes, also called…
Q: Where does the formation of germ cells and sperm takes place?
A: Developmental biology is that the branch of biology that deals with the study the processes by that…
Q: What are the stages of oogenesis? Describe all the ways in which it differs from spermatogenesis ?
A: Introduction: The process of formation of the egg cells in the ovaries of the fetus is known as…
Q: What are the functions of somites?
A: To define functions of somites
Q: What is the function of the placenta?
A: Placenta is formed after implantation of the embryo has occurred on the uterine wall. It is a…
Q: What are the properties of the multiple ovulution embryo sac?
A: MOET approach involves the production of multiple ovulation embryo sac which contains flush of…
Q: Where does fertilization normally occur?
A: Reproduction ensures the continuity of species on earth. It can occur in two ways that is sexual…
Q: What are the structural changes that occur in the uterus over the course of the menstrual cycle and…
A: The menstrual cycle is a sequence of natural modifications in hormone manufacturing and the systems…
Q: What occurs during cleavage?
A: Fertilization is the fusion of ovum and sperm so as to form a diploid zygote. Zygote is the first…
Q: What happens during the secretory phase of the endometrium?
A: The uterine cycle represents the cyclic changes that occur inside the uterus of a female.
Q: What are the three germ layers formed during gastrulation?
A: Developmental Biology is the field of biology that studies the processes by which multicellular…
Q: Where does fertilization usually take place?
A: The reproductive system consists of two system namely male reproductive system and female…
Q: Which hormones are secreated by the placenta to maintain pregnancy?
A: The placenta is an organ that develops in uterus during pregnancy. The placenta is the interface…
Q: How long does it take for the embryo to implant into the uterine wall ?
A: The sperm of male fertilized the ovum of the female results in formation of the zygote. Sperm is…
Q: what are the major events of embryo development? what are the major events of fetal development?
A: Embryo development as the name suggests the development or formation of the embryo. Embryo…
Q: What are the factors affecting the timing of PUBERTY?
A: Puberty is a state that occurs during the start of adolescence period around the age 12 to 15. It is…
Q: What is the name of the stem cells that form mature sperm?
A: The development of haploid spermatozoa from germ cells in the seminiferous tubules present in the…
Q: What is the product of fertilization?
A: Reproduction is a fundamental feature of life. Reproduction occurs in two forms, asexual and sexual…
Q: Prior to fertilization, where is the male gamete located?
A: Flowers are also known as blossom. Their primary function is reproduction in plants. They also a…
Q: What is external fertilisation?
A: Fertilization is the process by which male and female gametes are fused together, initiating the…
Q: How does oogenesis differ from spermatogenesis?
A: The cell is the basic and smallest unit of organisms. A group of cells functions together that form…
Q: What tissues and organs arise from the three germ layers in embryonic development?
A: In developmental biology, various stages are involved for the development of a foetus. Gastrulation…
Q: Which germ layer of a blastocyst gives rise to muscle and connective tissues?
A: The mesoderm give rise to muscle ,connective tissue , lymphatic system bones,circulatory system,etc.
Q: What is the time period for which sperm and egg are viable?
A: The mixed glands that serve the function of gamete production in the male reproductive system and…
Q: What is the main stimulus for the proliferative phase of the endometrium?
A: The changes during a menstrual cycle can be divided into three phases: i.) Proliferative phase ii.)…
Q: What is Fertilization?
A: The expansion in size and changes in shape of a creating life form rely upon the increment in the…
Q: What determines if a baby is a boy or a girl and how does the child reproductively mature?
A: The phenotype (trait) of an organism is determined by the genotype (alleles) of an organism. At the…
Q: Where does fertilization usually occur?
A: Sexual reproduction is a type of reproduction, which involves a complex life cycle in which a…
What determines whether an embryo will develop into a male or a female?
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- What must happen for a secondary oocyte to complete meiosis?Describe the major events that transform a fertilized egg into an embryo?Which of the following is required for successful fetal development after the egg has been fertilized? a) That the corpus luteum remains throughout the pregnancy b) Production of estrogen (estradiol) and progesterone from the placenta c) Release of hCG (human chorionic gonatotropin) from the placenta