Q: What is the ovum doing during the primary oocyte stage?
A:
Q: what structure contains enzymes needed by sperm to penetrate an oocyte?
A: Fertilization takes place when nuclei of both sperm and an oocyte fuse. Initially, a sperm must fuse…
Q: Is the sperm or the egg responsible for the sex of the chicks?
A: Sex determination is process by which the sex of the foetus can be determined. The sex in organisms…
Q: What are the functions of the trophoblast?
A: The embryo can be defined as the early stage of development of a multicellular organism. In general,…
Q: Is the mammalianembryonic development director indirect?
A: The process of embryonic development is otherwise known as embryogenesis. Fertilization is the…
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 histological difference between a morula and a blastocyst?
A: Introduction Life starts from single cell called Zygote. Zygote is the single diploid cell resulted…
Q: How is the yolk sac formed?What is the function of theyolk sac?
A: Yolk sac is the membranous sac attached to the embryo. It is also known as umbilical vesicle.
Q: Where are egg cells produced in a woman’s reproductive system? ____ Where does fertilization…
A: The biological system of an organism's reproductive system, also known as the genital system, is…
Q: What is normal gestation period(in days) of the developing foetus?
A: The developing zygote is called an embryo from the conception to the eighth week of the pregnancy.…
Q: What is the zygote stage?
A: The process of embryogenesis and fetal development initiate after the event of fertilization. It is…
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 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 do the amount and distribution of yolk influence gastrulation?
A: Gastrulation is a process in which the single layer of cells called blastula is arranged into a…
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: What is the first appearance of embryogenic callus?
A: The callus is basically an unorganized growing mass of parenchyma cells that is responsible for…
Q: Draw the H. nana egg and adult
A: H.nana or hymenolepiasis is caused by tape worm or cestode species. It is also called as dwarf tape…
Q: What are the cells producedin the first stage of theembryonic developmentcalled?
A: The process in which the embryo forms and develops is known as embryonic development.
Q: How does senescence occur?
A: In biology, senescence could be a method by that a cell ages and Completely stops dividing however…
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 occurs during cleavage?
A: Fertilization is the fusion of ovum and sperm so as to form a diploid zygote. Zygote is the first…
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 is the purpose of calcium ion in fertilization?
A: * Fertilisation is an generative fertilisation fusion of gametes gives rise to a new individual…
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: How do we develop from a single fertilized egg cell?
A: Introduction:- Fertilization is the process of haploid gametes fusing together to generate a diploid…
Q: How is the yolk formed?
A: Cells are the basic structural and functional units of life. These are the building blocks that make…
Q: Where oogenesis does takes place. Describe the stages of this process?
A: Diagrammatic representation of oogenesis: -
Q: What happens during embryogenesis?
A: After the process of fertilization, the process of zygote development starts to form an embryo and…
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 defferent mechanism the egg employed to ensure that only one sperm cell will fertilize…
A: Polyspermy is a fatal condition in which several sperm nucleus engage with the female nucleus.…
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: How is and egg (oocyte) prepared during oogensis for fertilization? Why is preparation essential to…
A: The process of formation of gametes is known as gametogenesis. In females, oogenesis is a process of…
Q: What are germ cells?
A: In humans, mainly 2 types of cells are present; germ cells and somatic cells.
Q: How does the embryo get nourishment inside the mother’s body?
A: Embryo means the developing offspring from the time of approximately 2nd to 8th weeks after 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: How does the sperm reach upto egg and how does it enter into the egg?
A: Fertilization is the process in which a sperm and egg are fused together in the uterine tube of the…
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: 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 indirect development?
A: Development involves the functional and physiological maturation of an individual. It is a…
Q: What is oogenesis?
A: An female’s internal reproductive organs are uterus, vagina, fallopian tubes, cervix, and ovary. The…
Q: what are the principal structures each germ layer gives rise to in the adult?
A: The zygote is a cell formed by the union sex cell of the male (sperm) and sex cell of the female…
What triggers activation of the egg?
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