Answer:
Semi-conservation replication describes the mechanism of DNA replication in all known cells. This process is known as semi-conservation because two copies of the original DNA molecule are produced. Each copy contains one original strand and one newly-synthesized strand.
DNA is passed down to the next generation in big chunks called: Chromosomes.
Every generation, each parent passes half their chromosomes to their child. If nothing happened to the chromosomes between generations, then there would be around a 1 in 8 change that you would get no DNA from a great, great, great, great grandparent.
What most people forget, through, is that our chromosomes get mixed and matched before they are passed on. It is because of this "recombination" that your great, great, great grandparent's DNA is almost cetainly still lurking in yours.
Explanation:
I majored in Biology
The man couldn’t have fathered the following child.
<u>Explanation:</u>
The blood grouping system in humans is called ABO blood grouping. The possible blood groups of humans are A,B,AB and O. ABO blood grouping is an example of co-dominance where both alleles of the ABO gene are expressed equally.
The ABO gene has 3 alleles. They are I^A,I^B and i. the alleles I^A,I^B are dominant over i. Person with the genotype I^A I^A and I^A i has the blood group A while a person having the genotype I^B I^B and I^B i has the blood group B. The person with the blood group will have the genotype I^A I^B.
Here the mother’s blood group is O which means her genotype is ii. The man’s blood group is AB which means his genotype is I^A I^B. The possible genotypes of the children are I^A i,I^A i,I^B i,I^B i with respective phenotypes A, A, B and B.
There is no possibility that the child can have the blood group O which means that the man could not have fathered the child.
Animal cell is described as the 3rd tropic level
Explanation:
Crossing over is a type of recombination that occurs during prophase I of meiosis and results in the exchange of genetic material between homologous chromosomes. In a population where crossing over occurs frequently, there would be increased gene pool or genetic drift and variations compared to a population where individual chromosomes do not cross over. The offspring will be genetically unique because of crossing over and independent assortment.