Critical mass requirement for an embryo to develop

Assignment Help Biology
Reference no: EM13527897

Each individual blastomere of an early-stage embryo is considered to be totipotent. However, there is a “critical mass” requirement for an embryo to develop into a viable offspring. Explain why.

Explain how a synchronous and/or uneven cleavage leads to early differentiation into inner cell mass and trophoblast tissue.

If you non-surgically collected embryos from a donor cow on day 7 when you would expect morulae or blastocysts, but recovered a number of morphologically normal 12-cell embryos, they would be considered degenerate. Why?

Reference no: EM13527897

Questions Cloud

Discuss the relevance of mitochondria in cancer : Discuss the relevance of mitochondria in cancer. Discuss the Warburg effect and changes in metabolic pathways that cancer cells undergo and mitochondria’s role in the adaptive mechanism.
Synchronized by giving two injections of prostaglandin : Cyclic cows can be synchronized by giving two injections of prostaglandin F2alpha, two weeks apart. Only a portion of the cows will come into heat after the first injection, but most should come into estrus after the second injection. Why?
What is the stage of early embryonic development : What is the stage of early embryonic development where the cells aggregate together to form a single mass of cells where individual cells are no longer distinguishable.
Lutea necessary throughout gestation to maintain pregnancy : In which farm animals is a corpus luteum/corpora lutea necessary throughout gestation to maintain pregnancy? HOw does pregnancy recognition in the cow differ from that of the pig? How do they both differ from pregnancy recognition in cats and dogs?
Critical mass requirement for an embryo to develop : Each individual blastomere of an early-stage embryo is considered to be totipotent. However, there is a “critical mass” requirement for an embryo to develop into a viable offspring. Explain why.
Maintained a few degrees below body temperature : Explain the mechanism by which the temperature of the testes is maintained a few degrees below body temperature.
Describe an experiment via which an intron-exon arrangement : How do the rates of warming and cooling of land surfaces compare to the rates of warming and cooling of ocean surfaces? Briefly describe an experiment via which an intron- exon arrangement can be determined. What developing germ cells are located in ..
What causes completion of meiosis : At what stage of meiosis do oocytes block at prior to the LH surge? After the LH surge? What causes completion of meiosis?
How a change in photoperiod results in loss of cyclicity : Be able to explain how a change in photoperiod results in loss of cyclicity in seasonal breeder animals at the end of the breeding season. (i.e., how does the responsiveness and sensitivity of the hypothalamus, pituitary and ovary change and what ..

Reviews

Write a Review

Biology Questions & Answers

  Neuro endocrine event

Choose a neuro-endocrine program in which you can show the importance of structure/function relationship, organization levels, and feedback control.

  What happens if an atom of an element gains

What happens if an atom of an element gains or loses electrons? What happens if an atom of an element gains or loses neutrons? What happens if an atom of an element gains or loses protons? Please provide a detailed answer.

  What is the basal lamina

What is the name of the epithelial cells that make up the epidermis? -What is the cytoplasmic intermediate filament found in these epithelial cell junctions ? -What is the name of the junctions that links the intermediate filaments of the epitheli..

  How do restriction enzymes and ligase

How do restriction enzymes and ligase allow us to clone fragments of DNA? How are cloning vectors then put into bacteria cells? How do we know if the bacteria cell has the vector? How do we know if the vector contains the insert? How is a cloning vec..

  Graphical tools for organizing and representing knowledge

A concept map is a diagram showing the relationships among concepts. They are graphical tools for organizing and representing knowledge.

  What is the concentration of an unknown solution

A dye has an extinction coefficient of 5.5x10 Mcm at 350 nm. What is the concentration of an unknown solution of this dye if observed absorbance was to be 0.25 at 350 nm in a 1.5 cm cuvette?

  Q1

q1. atpnbspandnbspgtpnbsparenbspprimarynbspsourcesnbspofnbspenergynbspfornbspbiochemicalreactions.a.

  The volume of urine differ from the baseline measurement

Drag the ADH bottle cap to the gray cap on the top right side of the nephron tank, and release it to dispense ADH. Click Start, and allow the run to complete. Click Record Data. In this run, how does the volume of urine differ from the baseline measu..

  What proportion of the f1 generation will be pink

When Mexican hairless dogs are crosses with normally haired dogs, about half the pups are hairless and half have hair. When, however, two Mexican hairless dogs are mated, about a third of the pups produced have hair, about two thirds are hairless, an..

  Calculating the osmolarity of a carrot or a potato

In this exercise you will be calculating the osmolarity of a carrot or a potato, which ever one you might have sitting around the house. You will need one potato or one carrot.

  There are two contrasting theories of the physician

there are two contrasting theories of physician behavior. the first is the traditional model and the second is referred

  How the human digestive tract processes food

Explain how the human digestive tract processes food. Include the various organs that help in digestion and absorption, and what happens to each type of food at each stage in the process.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd