MIEOSIS AND ABOlocus

The six monomer oligosaccharide on glycophorin containing a terminal N-acetyl-galactose is called the _____.

A antigen

What type of cell that is "matured" in the thymus stimulates production of immunoglobulins?

Helper T

An non-self antigen found on red blood cells is dangerous during transfusions due to the presence in the recipient blood of ______s that agglutinate those incoming red blood cells.

immunoglobulin

Type AB blood is an example of ______.

codominance

The six monomer oligosaccharide on glycophorin containing a terminal galactose is called the _____.

B antigen

The I^B allele of the ABO locus encodes a Golgi compartment _____.

galactosyl transferase

The i allele of the ABO locus is a _____ allele since it has mutations that encode a protein which is non-functional.

null

In type O blood, the glycophorins of red blood cells carry a five monomer oligosaccharide called the _____.

H antigen

Gametes are produced by a type of cell division called _____.

Meiosis

The two copies of each of the chromosome found within a diploid zygote are called _____ because they have the same loci arranged along the length of chromosomal DNA in the same order but have multiple nucleotide sequence differences in the 98% of their non-coding DNA due to the different ancestries of the sperm and oocyte that have formed that zygote.

homologous 

The many cells of a multi-cellular organism have received their copies of the original zygote's DNA through a process called ______.

mitosis

Metaphase II is ended and Anaphase II begun by the proteolytic cleavage of centromeric Rec8s from which the protective ____ has been removed.

Sgo2

At the end of the S phase of meiosis, each chromosome is composed of two _____ sister chromatids.

identical

Metaphase II involves bidirectional pulling on the kinetochores toward the spindle poles by ____ motors on spindle fibers to position each chromosome at the metaphase plate.

Dynein

An organism that has two copies (2n) of each chromosome is called ______.

diploid

At the end of Prophase I, the individual sister chromatids, and the "arms" of the chromosomes are held together through the action of a cohesin called _____.

Rec8

The centromeric Rec8s are not proteolytically cleaved during Meiosis I due to the protective complex they form with ____.

Sgo2

At the beginning of Prophase I of meiosis I, the maternally-derived and paternally-derived copies of each chromosome come together to form a _____.

Bivalent 

During Prophase I, the _____ complex "stitches" together homologous copies of each chromosome all along the length, starting from the telomeres to the centromeres.

synaptonemal

Metaphase I is ended and Anaphase I is begun through the action of _____ on the Rec8s found on the chromosomal arms.

separase

At the end of Prophase I, each of the sister chromatids of the chromosomes are ______ in comparison to each other.

homologous

During Prophase I, segments of maternally-derived and paternally-derived chromosomal DNA are exchanged through _____.

cross-over

Sperm are _____ (1n) gametes that fuse with an oocyte to produce a one-celled zygote.

Haploid

Meiosis I is called the _____ division due to the cutting of chromosome number in half (2n to 1n).

reductional