Hi this is my blog where I write the vocabularies of Biology. every vocabulary of this year you will see it here. If you liked, feel free to join.

miércoles, 30 de marzo de 2011

Abortion

The premature expulsion of the embyo or fetus from the uterus. can be voluntary or spontaneous

Aneuploidy



Having an extra chromosome relative to the parental chromosome number.

Non-Disjuction


Of cells, movement of a stretch of DNA to a new chromosomal location with no molecular loss.

Translocation


Of cells, movement of a stretch of DNA to a new chromosomal location with no molecular loss.

Invertion


With an invertion, part of the gene sequence of DNA within the chromosome is oriented in the reverse direction.

Duplication and Deletion




Duplication is when the gene sequence is repeated several
to many hundred of times.

Deletion is the loss of some portion of the chromosom
e.

domingo, 27 de marzo de 2011

Sex Chromosomes


The sex chromosomes are specific chromosomes that affect the sexuals traits. example in mammals, XX female, and XY males.

sábado, 26 de marzo de 2011

Karyotype


Is the study of chromosomes shorted by length, centromere location and other defining feature.

In-Vitro Fertilization


Is the fertilization of the ovule while is outside from the female body.

Homologous Chromosomes


Are a pair of chromosomes that have identical size, shape, and same gene sequence.

Crossing Over


Crossing Over is the process when two homologous chromosomes exchange information between them. They break at corresponding sites and exchange segments of themselves.