Which primary germ layer gave rise to the cells that eventually became the central nervous system? a. endoderm b. ectoderm c. acrosome d. mesoderm

Q: Answer the questions below to explain the Reproductive System- List 3 or more major organs/ parts…

A: The system which support the development and growth of baby is called reproductive system.

Q: Which form of reproduction can result from damage to the original animal? a. asexual b.…

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

Q: When do the oogonia undergo mitosis?a. before birthb. at pubertyc. at the beginning of each…

A: The female reproductive system is formed of the external and internal sex organs, which works in the…

Q: a How many parents are involved in sexual reproduction? b. Describe the genetics of the offspring in…

A: Sexual reproduction occurs through meiosis in which the gametes are produced by the male and female…

Q: The beginning of brain and spinal cord formation is termeda. cephalocaudal folding.b.…

A: Gastrulation process is characterized by formation of three primary germ layers, they are ectoderm,…

Q: segments of mesoderm that will form muscles are?

A: It is required to mention the segment of mesoderm that forms muscles.The formation of the three…

Q: d describe Life-span Development

A:

Q: Evaluate the effectiveness of various means of birth control, and explain how they work.

A: Answer- There are basically 3 different types if birth control measures-  Natural barriers-…

Q: How is colostrum most important to a newborn?a. It helps boost the newborn’s immune system.b. It…

A: Immune system is a complex organization of cells, tissues, and organs. The immune system important…

Q: In the sentence "The placenta performs an important function for the fetus," what does the word…

A: The placenta is a temporary fetal organ that begins developing from the blastocysts shortly after…

Q: The ribs form from the ________. a. notochord b. neural plate c. neural tube d. somites

A: The process by which cells of blastula get arranged to form germ layers is called gastrulation. The…

Q: Question 2 Describe how a positive feedback process helps in childbirth.

A: Most cited example of positive feedback is labor and childbirth process.  When head of ferus…

Q: Explain why it is safer for pregnant women to change their cat litter boxes

A: cat litter boxes: cat litter box called as sand box or cat box is used for the indoor feces and…

Q: Eventually the amniotic cavity is surrounded by a double-layered membrane called the…

A: The amniotic cavity is the cavity which is the closed sac between the embryo and the amnion and…

Q: Why does continued breastfeeding decrease the chance of pregnancy? (Hint: Think about the effect the…

A: Hormones are the organic substances that are produced in small amounts by specific glands, which are…

Q: Where are gamete cells found? A. Throughout the process of mitosis B. Throughout our entire body C.…

A: The development of sex cells is a focal piece of human proliferation: In preparation, an egg cell…

Q: Archegonium is an example of female gametangium in plants, which produce motile egg cell.

A: Ans- False Explanation- Archegonium is the female reproductive organ occurs in ferns, mosses and in…

Q: Which structure helps to expel the baby during labor? a. myometrium b. cervix c. endometrium d.…

A: In human females, the gestation period is about 9 months and the baby is delivered after this period…

Q: ative essay about in vitro fertilization and designer babies

A: A pre-implantation genetic diagnostic (PGD) test can be used to check for the presence of a genetic…

Q: Umbilical cord contains A allantois B yolk sac C arteries veins

A: The umbilical cord is a stretchable, tubular  structure which joins the fetus to the mother during…

Q: What was important about the development of the egg as a part of the reproductive cycle of animals?…

A: Yolk formation in humans

Q: Newborns are at much higher risk for dehydration thanadults. Why?

A: A baby which is 2 months old from his or her birth is considered newborns.

Q: between  which  two consecuative stages did fertilization occur

A: Fertilization is a cell-to-cell interaction mechanism that takes place among two unique cells: a…

Q: Compare and contrast gametogenesis in starfish and sea urchin.

A: Answer--

Q: Explain elwhy there is a high level of estrogen and progesterone once in every 28-day uterine cycle…

A: The ovarian cycle governs the preparation of endocrine tissues and release of eggs, while the…

Q: Fill in the blank: Eventually the amniotic cavity is surrounded by a double-layered membrane called…

A: Introduction: Fetal development undergoes a series of steps. To protect the fetus from any injury…

Q: Which is false about meiosis ? 2 A.Results in Daughter Cells with a full no. of chromosome. b…

A: Introduction :-

Q: Assess the function of the uterine horns of the pig.

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

Q: Draw a picture of the cell that would form if the sperm cell fused with the egg cell. what is this…

A: Introduction Each testicle's seminiferous tubules produce sperm, which is produced by the male…

Q: igment in bottom layer? A. melatonin B. melanin C. mesoderm D. ectoderm

A: Biological pigments are chemical substances that produce color in living organisms, like plant…

Q: why it would be harmful for a human mother’s blood to pass across the placenta and into the fetus?…

A: The unborn baby (foetus) relies on its mother for nourishment and oxygen during pregnancy. His or…

Q: Which form of reproduction is useful to an animal with little mobility that reproduces sexually? a.…

A: Answer is d.)  hermaphroditism.

Q: Producing offspring that is infertile is a,

A: The correct answer is- Post zygotic barrier

Q: Which term applies to egg development within the female with nourishment derived from a yolk? a.…

A: When the gametes of a male and a female fuse, it is called fertilization. A zygote results from this…

Q: During the evolution of animals bilateral summetry accompanied cephalisation suggest a reason for…

A: The process of cephalization is considered an evolutionary trend in which the sensory organs, mouth,…

Q: The process by which the structure labeled B is released from the structure labeled A is known as?…

A: The picture is showing the female reproductive system. It consists of ovary(A), Fallopian tube (C),…

Q: How does amount of yolk affect cleavage? Compare cleavage in a sea star with that in a bird

A: Fertilization is the process of fusion between haploid male and female gametes to form diploid…

Q: If a woman is DdHH, how many different types of eggs can she produce?

A: Homozygous is the genotype of an organism with two identical alleles at a locus. Heterozygous refers…

Q: What part of an infant’s body is said to stay in an immature state until needed to produce more…

A: Human stem cells are one-of-a-kind cells that have the ability to differentiate into a wide range of…

Q: What happened if there is an excessive secretion of prostaglandin during menstruation?…

A: Prostaglandins are derived from eicosanoids and has an action similar to hormones in animals they…

Q: Which structure is part of the female reproductive organ? A (A) A (B) B (C) C (D) D

A: The flower contains many parts such as stamen, pistil, sepals, petals and nectar glands. Flower is…

Q: Did Soap Operas Reduce Fertility in Brazil?

A: In Brazil, there were no strict rules for a population control policy by the government, and it is…

Q: increases the risk of infant death

A: Option B : It increases the risk of infant death

Q: Offspring get traits such as height and petal shape from their

A: The transmission of characters from parents to offsprings is called heredity. DNA in the chromosomes…

Q: If a girl started at the age of 14 and continued until the age of 49,calculate the number of eggs…

A: According to the menstrual cycle, A woman has the ability to view let only one egg per menstrual…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: