What is the histological difference between a morula and a blastocyst?

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 some advantages of cephalization?

A: Cephalization is the concentration of sense organs and nervous system control at the anterior head…

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: 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: How many days after ovulation does implantation occur, and inwhat stage is the conceptus at that…

A: Implantation is the stage when the embryo adheres to the uterine wall after fertilization. Ovulation…

Q: What is the functional significance of the stratum basalis of the endometrium?

A: Endometrium: It is the inner lining part of the uterus which has two layers. Stratum basalis and…

Q: What would be the consequences if polyspermy was not prevented? How does the zygote (or morula or…

A: Polyspermy:- it is a condition in which single oocyte is usually penetrated by more than one sperm.…

Q: Describe the formation and implantation of a human blastocyst

A: Developmental biology is the branch of science that includes the studies of a diversity of…

Q: Outline the postfertilization events that lead to formation of a blastocyst.

A: Reproduction is the phenomenon of producing offspring from the parent. The reproduction can be…

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 are the major functions of Female Placenta?

A: The placenta is a large organ that develops during pregnancy. It is usually attached to the uterine…

Q: What is the vernix caseosa of the fetus? What purpose does it serve?

A: The unborn offspring developing from the zygote in an animal or human is called a fetus. The fetal…

Q: Why do benign ovarian cysts develop in women who ovulate?

A: Cysts are fluid-filled sacs that can occur in any part of the body. The cysts that occur in the…

Q: Why are the males whose testes fail to descend to the scrotum considered infertile?

A: Testes are also known as testicles and they are a pair of sperms producing organs which helps in…

Q: To which structures do the mesovarium, ovarian ligament, and suspensory ligament anchor the ovary?

A: The female gonad that lies in pair along either side of the uterus in the female body's pelvic…

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 old is an ovulated oocyte of a 35-year-old woman? What consequences does this have?

A: Fertility changes with age. For a woman, the beginning of their reproductive year starts onset of…

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 the oocyte nucleus move during oogenesis?

A: Oogenesis: Otherwise called as ovogenesis. This is a process that happens during the embryonic…

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: 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: 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 cells of the blastocyst invade the endometrium?

A: Blastocyst is a 70-100 cell structure that gets implanted in the uterus. It is composed of two types…

Q: When is the sex of a fetus visible externally?

A: The standard gestation period of people is 38 weeks from the fertilization of the ovum. During the…

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 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 is the significance of gastrulation?

A: Gastrulation is the embryonic stage in which all the germinal layers are being developed. It is a…

Q: Identify two differences between a zygote and blastocyst

A: The fusion of male and female gametes is termed as fertilization. The process of fertilization takes…

Q: what are the symptoms which indicate that a woman is about to ovulate?

A: Union of male and female gametes is known as fertilization. In human usually fertilization occurs in…

Q: What is the advantage of cephalization?

A: Cephalization is an evolutionary process of concentrating the nervous tissues, sense organs and…

Q: .What type of abnormality in the sperm that fertilizes a normal egg will produce an XYY zygote? What…

A: XYY syndrome or Jacob's syndrome  . This condition 47 ( or 46Y) is seen in male .  It is not…

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 functions of the placenta

A: The question asks about the placental functions.

Q: Where oogenesis does takes place. Describe the stages of this process?

A: Diagrammatic representation of oogenesis: -

Q: Despite the presence of So many sperms in the vicinity of an egg cell, only one sperm enters the…

A: Fertilization is a process in which male and female gametes fuse to form a zygote. This zygote…

Q: Endometrium function?

A: UTERUS It is a major female secondary sex organ of the reproductive system in humans and most other…

Q: What is the first appearance of embryonic callus?

A: Callus is defined as an unorganized tissue mass growing on solid substrate. Callus forms naturally…

Q: How many sperms will be produced from 10 primary spermatocytes and how many eggs will be produced…

A: Gametogenesis is a process through which male and female gametes (sperms and eggs) are formed in the…

Q: Name and describe the four components of an unhatched blastocyst.

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Gastrulation is brought about by an invagination of the blastula. True or False?

A: It is true.

Q: When does implantation of the blastocyst usually take place?

A: During fertilization, a sperm comes in contact with the zona pellucida layer of the ovum and induces…

Q: What are the benefits of the Amniocentesis procedure?

A: In an amniocentesis procedure, a sample of amniotic fluid from the uterus is removed. With the use…

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: 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 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: Enlist any two functions of a female placenta.

A: A fetus is the unborn offspring of an animal that develops from an embryo. The placenta is a…