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: What is the ovum doing during the primary oocyte stage?
A:
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 are the two types of embryonic folding?
A: In embryonic folding, the flat trilaminar disk turns into a lot of round shape embryos due to the…
Q: What is yolk? What is its role in fertilization and development?
A: The development of organisms depends on the supply of resources. In embryo development nutrition of…
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: What aids in the differentiation or the maturation of the oogonium into a mature ovum?
A: Oogenesis is the process of formation of ovum. It occurs in ovary of female.
Q: What is the significance of cleavage during the early stages of development?
A: The cleavage is the division of cells in the early stage of an organism. This implies that with each…
Q: What is organogenesis, and why is this concept important to the process of development?
A: Question - What is organogenesis , and why is this concept important to the process of development ?…
Q: How are the development events, which you have observed to occur in the testis and ovary,…
A: The initial processes of gonads development are essentially similar in both sexes consisting of…
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 structural features of the endometrium and myometrium contribute to their functions?
A: Uterus is one of the important organ of the female body. It serves many important functions in the…
Q: How does the oocyte nucleus move during oogenesis?
A: Oogenesis: Otherwise called as ovogenesis. This is a process that happens during the embryonic…
Q: What Causes the End of Cleavage in a Frog Embryo?
A: All frogs reproduce sexually, but instead of the fertilization taking place inside the female, it…
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: Which gene is responsible for the development of the gonads into testes?
A: Introduction Chromosomes are classified into two types: Autosomes and Allosomes/Sex chromosomes. The…
Q: What is meant by the term “activation” in embryology?
A: Embryology is a branch of biology. It is the study of formation, growth as well as the development…
Q: What are the functions of somites?
A: To define functions of somites
Q: What is the differences between Mammals and Frogs in Spermatogenesis?
A: Gametogenesis is the process of manufacturing gametes or daughter cells in gamete-producing mother…
Q: What determines whether an embryo will develop into a male or a female?
A: The process of fertilization is the union of male and female gametes. It results in the formation of…
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 triggers activation of the egg?
A: The sperm of several species are attracted to the eggs of their own species by the process of…
Q: "What is the advantage of internal fertilization over external fertilization and vice versa"?
A: The natural cycle by which new individual creatures – "offspring" – are delivered from their…
Q: If Ca2+ from the egg’s endoplasmic reticulum is responsible for the cortical granule reaction and…
A: Reproduction is the process of production of own kinds.
Q: Describe the processes of fertilization and implantation
A: Fertilization: The process of fertilization involves the fusion of the nuclei of the male sperm with…
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 are the distinguishable parts of the 72-hour chick embryo? Give at least 5 parts and the adult…
A: Probably the best magical occurrence of nature is the change of the egg into the chick. A chick…
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: What is this condition that results if the fertilized egg fails to descend down to the uterus?
A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…
Q: What are the similarities and differnces between spermatogenesis and oogenesis?
A: Spermatogenesis and oogenesis are two different processes of the production of gametes. It is…
Q: How is the yolk formed in terms of embryogenesis
A: Embryogenesis is the course of improvement of an undeveloped embryo from the zygote. In…
Q: Why is fetal Hb essential for the survival of placental animals?
A: Hemoglobin is an oxygen transport protein in mammals. It is made up of four sub-units. Adult…
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 happens to the second sperm nucleus, the one that does not fertilize the egg cell? What is the…
A: Sexual reproduction is a fusion of male and female gametes to produce offspring from the zygote.…
Q: What is the advantage of internal fertilization over external fertilization and vice versa?
A: Question - What is the advantage of internal fertilization over external fertilization and vice…
Q: How are the events that take place in spermatogenesis and oogenesis similar? How are they different?
A: Spermatogenesis and oogenesis are the cycles of arrangement of male and female gametes.…
Q: How do the processes of capacitation and acrosome reaction affect the fertilization process? How do…
A: Introduction Fertilization refers to the process when there is a fusion of male and female gametes…
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 developmental fate of the inner cell mass of the blastocyst?
A: A diploid zygote is formed by the union of a haploid egg cell and a haploid sperm cell. The zygote…
Q: what kind of division can perform normal growth and development for the embryo & why
A: The embryonic development process initiates after the fusion of male and female gametes. It involves…
Q: Are different stages of development tend to generate differences in stimulating cleavage and…
A: Cleavage -- Term cleavage is defined as a series of rapid mitotic division of zygote after…
Q: During which of the 3 stages of oogenesis does the oocyte nucleus move?
A: Oogenesis- Oogenesis is the process of formation of female gametes. This process begins inside the…
Q: Why would the absence of a father affect the timing of puberty?
A: Puberty is defined as the stage when a child starts to grow sexually. During this stage, physical…
How is an egg (oocyte) prepared during oogenesis for fertilization? Why is preparation essential to development?
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- How is and egg (oocyte) prepared during oogensis for fertilization? Why is preparation essential to development?What is organogenesis, and why is this concept important to the process of development?what is the process which involves in the self-destruction of cells in the developing embryo as shown in the disappearance of the embryo’s tail?
- After fertilization a developing embryos goes through several changes. At about 2-3 days, what is the embryo referred to as?How many follicle cells will fit inside? Is there an abundance of yolk within the cytoplasm of the mammalian oocyte? Where will the fertilized egg develop and how will it receive its nutrients? please helpWhy is it concerning for a fertilized egg to implant outside of the uterus?