Referring to an embryo is the stage of a developing human during the early stages in the development; the term embryo is used starting from the middle of the second week after fertilization until the end of the eighth week. Thus it is an unborn but developing child or animal.
Describe the progression and stages of embryo development from fertilization to an early embryo that has a fully formed neural tube. Include the following terms (at least) in your description: gastrulation, organogenesis (neurulation), zygote, cleavage, blastula, morula. Explain the functional differences of extraembryonic membranes in terrestrial vertebrates.
What embryo stage(s) would you be likely to see when collecting an embryo seven days after the donor ovulated?
The effect of _________ on embryonic development is ___________. A. polyspermy, the embryo develops normally but is twice as large B. polyspermy, disruptive cell divisions and the early death of the embryo C. polyandry, disruptive cell divisions and the early death of the embryo D. mitosis, disruptive cell divisions and the early death of the embryo
While the embryo is developing, extra-embryonic membranes form around the embryo. One of these membranes is the allantois . From the list below, select the two things that form from the allantois. future sperm or egg cells first blood cells parts of the digestive tract the placenta the umbilical cord portions of the urinary bladder
While the embryo is developing, extra-embryonic membranes form around the embryo. One of these membranes is the yolk sac. From the list below, select the three things that form from the yolk sac. parts of the digestive tract future sperm or egg cells portions of the urinary bladder the placenta the umbilical cord first blood cells
1. What changes do you expect to see in the 72-hour chick embryo that makes it look different from a 33-hour or 48-hour chick embryo? 2. What week of human development is a 72.-96 hour chick embryo comparable to? What sensory structures are visible in the 72-hour chick embryo? 3.What sensory structures are visible in 72 hour chick embryo? 4.What changes do you expect to see in the 92-hour chick embryo that make it look different from the 72-hour chick...
what is the role of embryo in the nutrient mobilization?
The engrailed gene of Drosophila is expressed in 14 stripes in the embryo. This corresponds to a line of cells in each segment. If one makes a fly where all of the engrailed enhancers drive the expression of GFP (green fluorescent protein) you predict: A. The embryo will have evenly green fluorescence over its entirety. B. The embryo will have 7 stripes of green fluorescence. C. The embryo will have 14 stripes of green fluorescence. D. There will be no...
Explain why cleavage is restricted to the blastodisc in the chick embryo
Indicate the expression pattern of the caudal protein in an embryo that is bicoid -/-.