For example, predivision ( the separation of chromatids before anaphase ) in the first polar body can induce the formation of an aneuploid polar body.
22.
For example, predivision ( the separation of chromatids before anaphase ) in the first polar body can induce the formation of an aneuploid polar body.
23.
In female animals, three of the four meiotic products are typically eliminated by extrusion into polar bodies, and only one cell develops to produce an ovum.
24.
Polar bodies were first identified and characterized in the early 20th century, primarily by O . Hertwig, T . Boveri, and E . L . Mark.
25.
A euploid zygote can be produced if the aneuploidy is reciprocal : one polar body has an extra chromosome and the other lacks the same chromosome.
26.
The polar body is positioned at the 12 or 6 o'clock position, to ensure that the inserted micropipette does not disrupt the spindle inside the egg.
27.
In this work the team was able to sequence the transcribed genetic material, or mRNA, in egg cells, in smaller structures pinched off from them called polar bodies.
28.
By screening the first polar body for chromosomal anomalies, non-viable eggs can be reliably identified, though eggs with normal first polar bodies can still be affected by errors.
29.
By screening the first polar body for chromosomal anomalies, non-viable eggs can be reliably identified, though eggs with normal first polar bodies can still be affected by errors.
30.
He turned his attention to genetic analysis of polar bodies, byproducts of maturing egg cells that are shed before and after fertilization and which contain the mother's genetic material.
