20- 21, 19 18 24 26 225 23 16 15 10 48 hr Chies Transver

Q: 27 28 26 25 29. 30. 24 31 23 32 22 33 34 20 P -w² 19 8 15 16 72hr chicken embr Transverse section…

A: Embryology is the branch of biology that studies embryogenesis, or the formation of an embryo out of…

Q: What is the function of the umbilical arteries? What is the function of the umbilical vein? What is…

A: In placental mammals, the fertilized zygote develops into a new organism within the uterus (womb) of…

Q: Please match the early developmental structure on the left with the human structure it develops into…

A: Fertilization is a process in which male and female gametes fuse with each other to form Zygote .…

Q: D А- -E B- C- OALL

A: Structural changes occurs in different stages of chick embryo.The 72 hour chick embryo shows the…

Q: The maternal genome drives the first stage of embryonic development.     True     False

A: In developmental biology, embryonic development, also known as embryogenesis, is the development of…

Q: Gastrulation process in human embryo. Please give a detailed one.

A: The female reproductive system help in producing the egg cells, transport these cell where…

Q: name the embryonic structure at tag # 33

A: The fetal development follows a predictable course, in which the sperm and egg unite in one of our…

Q: Amniocentesis and genetic screening reveal that a fetus carries a defective L1-CAM gene. What…

A: Amniocentesis and prenatal testing are the diagnostic tests performed before the child's birth. This…

Q: With regard to primordial germ cells induction, explain how mammals are different from other…

A: The source of heritable genetic variation, are the germ cells. They produce the totipotent zygote…

Q: Label the chicken embryo

A: Embryo It is defined as the stage of development which is found in sexually reproducing organisms.…

Q: oogenesis.

A: oogenesis -In the human female reproductive system, growth process in which the primary…

Q: 1. pointed structure? 2. What is #1 it made up of? 3. pointed structure? 4. significance of #3? 5.…

A: 1) Ectoderm of head 2) Ectoderm is the layer of skull and it differentiates to form epithelial and…

Q: What ethical issues are associated with the storage of embryos? Who should be making the decision…

A: After fertilization of egg with the sperm, Zygote is formed. It will develop to form Embryo, which…

Q: 34, 32 33- 35 31- 30 36, 29 39 38 37 40, 28 27 26 25 42 24 23 44 45 46 2 -w 20 19 17 18 9 16 14 15…

A: Only the causal half of the embryo must twist 90 degrees after 72 hours of fertilisation, causing…

Q: There are 5 primary oocytes that will undergo cell division, How many functional egg cells will be…

A: The journey in short of an oocyte is as follows- the egg follicle is activated, the egg grows and…

Q: 1. 2. 5 6 7 8 (area?) 9 (area?) 10 (area where #H6 is formed)

A: Introduction :- Developmental biology is the branch of biology which deals with the different stages…

Q: Label the 48 hr chicken emrbyo

A: Embryo It is a product of fertilization that results from the fusion of an egg and a sperm. The…

Q: Please describe two mistakes from the downloaded diagram on fertilization

A: Fertilization It refers to the process of fusion of male and female gametes to give rise to a new…

Q: -3. The figure below shows cleavage stages in an embryo. From studying the photographs, what can you…

A: On fertilization, the zygote undergoes cleavage. That is the process of development of multicellular…

Q: differentiate the frog testis and mammal testis.  Testis characteristics Frog Mammal 1.     2.

A: Although molecular clock dating suggests its break from other frogs dates back to the Permian, 265…

Q: 10. Draw and label a 14-day conceptus showing the chorionic sac, the chorionic cavity. Be sure and…

A: During the early stages of embryonic development, various structures and layers form within the…

Q: When the embryo is implanted, what developmental stage this be? cleavage fetus blastula gastrula

A: Sexual reproduction in humans includes a fusion of sperms and eggs to form a zygote.

Q: At what phase of development would a mouse embryo appear me similar to a chick embryo? Blastula…

A: THE STAGE OF DEVELOPMENTIS BLASTULA STAGE.

Q: "morphogen"

A: Morphogen is a protein which is a signalling molecule that helps in formation of organs…

Q: two-step procedure for identifying the tunicate embryo's marginal cells

A: Tunicates are vertebrate organisms that live in the marine environment. These are sometimes also…

Q: Define prepuce

A: The penis is an external male intromittent organ that also functions as a urinal duct. The base…

Q: give the Significance  of the ff   Cleavage to embryogenesis       CAMs and Junctional…

A: * cleavage means  division of cells in  embryo . * The cells formes as result of  cleavage are…

Q: 8 2 m

A: The given diagram present the developmental stages of mammalian ovary . Follicle to corpus luteum…

Q: differentiate the frog and mammalian spermatogenesis. Spermatogenesis Frog Mammal

A: Spermatogenesis is the development of haploid sperm cells from germ cells in the testis'…

Q: what causes activation of certain genes before fertilization?

A: Fertilization is the process of fusion of male and female gametes for the formation of a zygotes.

Q: In this picture which letter represents the chorion? Embryo D Mother's blood vessels G OE O o o

A: The chorion is the outer membrane surrounding the developing embryo in amniotes. It originates from…

Q: Why is it immoral to culture headless embryos when in fact it can help to help people who need organ…

A: Murder of an individual is considered immoral. On similar terms, an embryo which is cultured to be…

Q: Draw a 72-hour old chick embryo, locate the brain, heart, limb buds, and the eye

A: Chicks are classified under Aves class. Males and females are separate in chicks. The male chick is…

Q: 12. 11 14 13 10

A: Eggs of chicken are telolecithal and they divide through meroblastic cleavage. The development and…

Q: Why is there the need for two separate mechanisms to complete the neural tube?

A: Neurulation is the process of the formation of a neural tube. This occurs by transforming the neural…

Q: What nutrients are missing for ex-ovo development and what if anything can be done about this?

A: The process of growing embryos outside of the egg is referred to as ex-ovo development. This…

Q: A B

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

Q: Discussion 1. What type of egg is the chicken egg: (isolecithal, telolecithal, alecithal)? 2. This…

A: Introduction :  The zygote is housed inside the egg. Both the zygote and the embryo are fed by it.…

Q: Draw a serial transverse section of 18 hour chick embryo.

A: 18 hour chick embryo. At this point, it is clear to see the core translucent area pellucida and the…