Without SRY expression, an embryo will develop ________.a. male reproductive structuresb. female reproductive structuresc. no reproductive structuresd. male reproductive structures 50 percent of thetime and female reproductive structures 50percent of the time

Q: Suppose someone identifies a “gene for” certain aspects of sexual development. In what ways might…

A: The basic physical and functional unit of heredity is known as a gene. DNA makes the genes. To make…

Q: The process of spermatogenesis produces __________ functional sperm and Oogenesis produces…

A: Answer: SEXUAL REPRODUCTION is the type of reproduction which requires male gamete and female gamete…

Q: The seven-day blastocyst: A. has a single layer of trophoblast at the embryonic pole B. has an…

A: The correct option is C.

Q: ''As development progresses, individual cellsbecome more and more restricted in the range of cell…

A: Cells are the basic unit of life. They are often known as "building blocks of the body" and exhibit…

Q: Each egg cell develops in its own fluidfilled space called a/an _____.

A: Each egg cell develops in its own fluid-filled space called a/an Follicle. The follicle assumes a…

Q: The umbilical cord connects the developing fetus to thea. mother’s belly button.b. placenta.c.…

A: Reproduction is the process by which an organism creates more of its own progeny. During…

Q: embedded

A: The Uteroplacental circulation is the vascular contact that is present between the uterus and the…

Q: Choose the best of the following The fusion of a sperm and an egg cell initally produces which of…

A: Process of reproduction in human beings is very complex and interesting. It includes various…

Q: Which developmental stage is mismatched? a. second week—implantation b. third week—heart development…

A: Option D is mis Matched

Q: The Following are parts of sperm cell, what their importance in fertilization? A. Acrosomal Vesicle…

A: The Following are parts of sperm cell, what their importance in fertilization? A. Acrosomal Vesicle…

Q: Chorionic villi develop from:- a. the zona pellucida. b. the endometrium. c. the…

A: Chorionic Villi sprout from the chorion after their rapid proliferation in order to give a maximum…

Q: The fusion of a sperm and an egg cell initally produces which of thefollowing?a. blastocyst d.…

A: There are 2 types of cell namely somatic cells and germ cells. Germ cells are aimed to produce…

Q: Which of the following will result in identical twins?a. fertilization of two eggs by two different…

A: During fertilization, the sperm and egg recognize each other, the sperm fuses with the egg, joining…

Q: Choose the best Polar bodies are produced duringa. DNA replication.            d. oogenesis.b.…

A: Polar bodies:                A small haploid cell which is formed at the same time as an egg cell…

Q: Binding of a sperm to an oocyte plasma membrane causes the oocyte to______ . a. enter an oviduct c.…

A: During fertilization, when the spermatozoan penetrate the zona pellucida, makes physical contact…

Q: At what stage uteroplacental circulation started?  a.Maternal blood entering the lacunar  b.Embryo…

A: The uteroplacental circulation is a circulatory framework where two circulation systems, the fetal…

Q: The feature that distinguishes a fetus from an embryo is that the fetus has a. All of the organ…

A: Answer is a.) All of the Organ systems.

Q: At puberty in both sexes:          a. Levels of FSH and LH increase           b. A sex drive…

A: Option (e) is correct. During puberty level of FSH and LH increases A sex drive also develops…

Q: Women sometimes develop benign tumors calledovarian teratomas or dermoid cysts in their ovaries.Such…

A: In the ovaries of women, the ovarian teratomas or dermoid cysts develop as benign tumors. These…

Q: For the first 8 weeks of gestation, a conceptus is nourished mainly by a. The placenta. b. Amniotic…

A: A conceptus receives nutrition is totally depends on the state. The foetus stage receives nutrition…

Q: Which of the following cells is haploid? (a) primary oocyte (b) secondary oocyte (c) oogonium (d)…

A: Answer - In meiotic division of cells, haploid daughter cells are produced. They have one pair of…

Q: which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b)…

A: The mesoderm, or middle tissue, gives rise to most of the muscle and connective tissues. Finally the…

Q: Somites a. begin forming at the tail end of the embryo and then move forward in a wavelike…

A: Introduction: Somites can be defined as the longitudinal series among other series of blocklike…

Q: In humans, the development of fertilised egg takes place in the: (a) ovary (b) testis (c) oviduct…

A: Fertilization in humans refers to the fusion of human sperm and egg. This process occurs in the…

Q: Rarely, two sperm may penetrate a secondary oocyte. Do youthink this fertilized cell will survive…

A: Fusion of only one sperm takes place with the egg.

Q: deggs are made here A. prostate gland where the embryo implants to grow a placenta near the many…

A: Match the following belongs to the Human reproductive system.

Q: he event that causes the release of high levels of estrogen release causing positive feedback is: O…

A: The anterior pituitary rapidly modifies its reaction to consistently elevated oestrogen levels…

Q: At puberty, the testes contain a finite number of cells and producean enormous number of sperm cells…

A: Spermatogenesis could be a joint sequence of events throughout maturation of spermatogonia into…

Q: nderstood, scientists do know that high levels of the hormone estrogen lead to the formation of r…

A: Oxytocin is a peptide hormone that is produced by the hypothalamus and stored in the posterior…

Q: Although the male ejaculate contains hundreds ofmillions of sperm, ________.a. most do not reach the…

A: Reproduction is the process by which the organisms propagate their species. Sexual reproduction and…

Q: Sperm cells originally come from a diploid cell called a…

A: Reproduction (or multiplication or rearing) is the natural interaction by which new individual…

Q: In a femal human, the oogonium forms when the female is a _______________. This happens…

A: Ovaries are female reproductive structures that produce gametes and secrete sex hormones oogenesis…

Q: In human development, an embryo is most sensitive to chemicals, radiation, and pathogens during the…

A: Need to find the best option from the given four options related to embryo.

Q: One role of the acrosomal reaction is: O Fusing the sperm membrane with the oocyte membrane O…

A: Fertilization is the process in which male gametes fuses with female gamete to form Diploid zygote .…

Q: D E Figure 42.11 Use the figure above showing human embryonic developmental day 14 to ans The…

A: Embryo is pre birth stage. It is formed just after fertilization and is followed by fetal stage. It…

Q: What would happen if stem cells divided like spermatogonia? O There is a huge stock of stem cells in…

A: Spermatogenesis is the formation of the sperm from 2n cells to n cells. According to me the option…

Q: Thenumber of eggs laid by a female is called her:a.fertility.b.gonadosomatic index.c.growth…

A: In the reproductive body of an animal, an egg is ellipsoidal or spherical in shape. Within the egg…

Q: On average, girls begin puberty at about the ageof______________ , boys at about the age of…

A: Girls' breasts normally develop earliest as they approach puberty.Breast buds can be exceedingly…

Q: During cleavage, the mass of cells: a. increases b. decreases c. doubles with every cell division d.…

A: The development of a human embryo is called embryogenesis, which starts with the fertilization of an…

Q: These structures (missing in human females) is present in female pigs because pigs give birth to…

A: Anatomy can be defined as a branch of biology that is associated with the study of the organism’s…

Q: An individual who is XY but is missing the SRY gene would be expected to develop into a. a male. b.…

A: SRY stands for the sex determining region of Y-chromosome. A normal individual have 46 chromosome in…

Q: What are the female gonads called?a. oocytesb. ovac. oviductsd. ovaries

A: Reproductive system is used for the sexual reproduction. Female internal reproductive organs include…

Q: at would nappen il stem celis divided ike spermatogonia. O There is a huge stock of stem cells in…

A: Stem cells are kind of totipotent cells which are able to differentiate into any cells whenever…

Q: The fetal period is (a) from weeks 9–38, (b) the time of rapid growth of body organs, (c) a time of…

A: Introduction  The usual gestation period in human females lasts for about 40 weeks which is…

Q: atch the germ layer on the right with its contribution to the tissues and organs of the embryo, on…

A: Endoderm, ectoderm, and mesoderm are the three germ layer types. Tissues and embryonic organs…

Q: Gastrulation occurs to form which three tissues? O hypoblast O ectoderm mesoderm O endoderm O B, C,…

A: During the early stages of embryo development, a multitude of signals are being released, some of…