Answer:
A.) Prophase I
Explanation:
Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I. By meiosis II, only sister chromatids remain and homologous chromosomes have been moved to separate cells.
The right answer is BB or BO
The blood group is inherited through a gene located on chromosome 9. Call it the ABO gene. The ABO gene exists in 3 forms, called alleles. We inherit one of these alleles from each of our parents.
The combination of these two alleles is called genotype. The blood group that results from this combination is the phenotype.
* B and B give the BB genotype, which means at the phenotype level, blood group B.
* B and 0 give the B0 genotype, which means at the phenotype level, blood group B, because B is dominant.
Answer:
All four complexes pump protons out of the mitochondrial matrix
Explanation:
What differs are the biochemical processed by which each complex pumps out the protons. Only ATP synthase pumps proton from the intermembrane space to the matrix. This is as it harnesses the proton motive force, created by the other complexes, to generate ATP molecules.
