How do teratogens cause birth defects?

Q: In which period of life doesthe formation of gametesbegin in women?

A: Gametes are reproductive cells. In male it is known as sperm and in female it is known as egg or…

Q: What causes the contraction of the uterus ?

A: The uterus is a hollow muscular organ located between the bladder and the rectum in the female…

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 causes impaired spermatogenesis?

A: Answer- Spermatogenesis is the process of the formation of sperms in the testis by the help of…

Q: Why do GnRH levels increase at the beginning of puberty?

A: Puberty is the phase of sexual maturation in an individual. The process of puberty occurs between…

Q: How do hormones regulate sperm production?

A: The basic fundamental difference between males and females is the reproductive system and its…

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: What is The Luteal Phase?

A: The menstrual cycle is a periodic cycle seen in the females of the order primates. It starts at the…

Q: What are the stages of spermatogenesis?

A: Spermatogenesis is that the method by that haploid spermatozoa develop from germ cells within the…

Q: How does ovulation take place?

A: In mammals, the egg is ovulated as a secondary oocyte that is at metaphase of the second meiotic…

Q: During which stage of cell division are spermatids formed from the secondary spermatocytes?

A: BASIC INFORMATION  GAMETOGENESIS  It is the process of formation of gametes. The diploid…

Q: What are the ways to induce labor?

A: Labour is a sequence of continuous,progressive contractions of the pregnant uterus which results in…

Q: What are the endocrinefunctions of the placenta?

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

Q: Why does menopause occur?

A: Menopause is the natural biological decline process that defines the condition of reproductive…

Q: What is primary spermatocytes?

A: Spermatogenesis is the process through which spermatogonium forms mature spermatozoa in the male…

Q: What are primordial follicles?

A: The process of the formation of life or living organisms from pre-existing living organisms is…

Q: What are the differencesbetween spermatogenesis and oogenesis?

A: The male and female reproductive organs, the testes, and ovary are called gonads. These contain…

Q: When an ovum gets fertilised, menstural cycle stops temporarily in a woman?

A: Every month the inner lining of the uterus known as endometrial layer degenerates following the…

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 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 is the major function of the Placenta?

A: The placenta is an organ that develops in uterus during pregnancy. The placenta is the interface…

Q: What is parthenogenesis ?

A: Reproduction is the process that ensures the continuity of species on earth. It is the main feature…

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 happens in the process of spermiogenesis?

A: Spermatogenesis is the formation of a haploid and functional male gametes (i.e — spermatozoa) from…

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: rthenogenesis produce sterile offspring?

A: Parthenogenesis is a type of asexual reproduction in which the progeny is produced without…

Q: What happens in the menopause?

A: The menstrual cycle is a sequence of changes in the structures of the uterus and ovaries and hormone…

Q: What hormones does the placenta produce?

A: The placenta is a flattened circular organ in the uterus of pregnant mammals, which nourishes and…

Q: What type of cells surround the oocyte in a unilaminar follicle?

A: oocyte present in a unilaminar follicles. oocytes is an cell present in the ovary which form ovum…

Q: What is spermatogenesis? Briefly describe the process of spermatogenesis.

A: The testes is the male reproductive organ which produces sperm and the male sex hormone. Sperm is…

Q: What is puberty?

A: The postnatal period begins immediately after the birth and continues until maturity, the state,…

Q: How are prolactin and oxytocin related to both the uterine changes and lactation?

A: Lactation refers to the act of releasing milk from the breasts of women who have delivered their…

Q: What are the functions performed by the testis in human beings?

A: Reproduction is a biological process, which ensures the continuation of species. The human male…

Q: How does breast development differ between adult men and women?

A: Introduction Humans belongs to class Mammalia. Means they have mammary glands to feed their young…

Q: What is the appearance of the Graafian follicle?

A: When the girl reaches puberty two hormones are released namely LH and FSH which acts on the…

Q: What happens to the follicle immediately after ovulation?

A: Reproductive system (or genital system) is used for the sexual reproduction. The female attains…

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: What is menopause?

A: The female attains puberty and begins to menstruate, which is the fertile period of the woman. At…

Q: How common is sperm DNA fragmentation?

A: Sperms are the haploid male reproductive cells, which fuses with the haploid ovum or egg to form…

Q: What is secondary spermatocytes?

A: Sperm is also called as spermatozoa. It is a male reproductive cells, produced by most animals. In…

Q: What is the course of prenatal development, and how do teratogens affect thatdevelopment?

A: Developmental psychology is a scientific discipline that seeks to explain growth, development, and…

Q: What is Menopause?

A: Introduction In this question we will discuss about the Menopause.

Q: What is the endocrinefunction of the placenta?

A: Placenta is the organ that develops in the uterus during pregnancy. This structure is essential for…

Q: What causes damaged sperm?

A: Sperm damage or especially sperm DNA damage is the major cause of defective sperm function.  DNA…

Q: What is tubal pregnancy?

A: The period during which a fetus develops inside the uterus is known as pregnancy. Pregnancy occurs…

Q: During spermatogenesis, is there any difference in outcome between first- and second-division…

A: Non disjunction-It occurs when pairs of homologous Chromosomes or sister chromatids fail to separate…