Human Genetics

Each generation of offspring bears so many possible impregnation of maternal and paternal traits as a consequence of the frequent grabbing of chromosomes by the microtubules during metaphase I.

The identical twins will have the same base sequencing in their DNA because they originates from the same egg and sperm of the parents.

This is the only option that fits the criteria in the question. Since father is hypertonic so he must be pp & mother is carrier so she must be Pp.

Phagocytes literally means eating of the cells. To do this, and be able to get the nutrients from inside the cell, it has to break down the outer defenses (cell walls, cell membranes, plasma membranes). The cytoskeleton provides the structural integrity for the cell, so it should be disassembled.

He gave us the basis for understanding genetic inheritance in all living things, including humans. His realization that we inherit units or genes was the key to it.

In the process of meiosis, four haploid daughter cells are formed. In humans, cells that go through meiosis are the sperms and egg cells. The reason why DNA does not duplicate between meiosis I and meiosis II is because only half the number of chromosomes is necessary in a sperm or egg cell. That's why, when a sperm fertilizes an egg, each cell has half the number of chromosomes necessary to create an organism, so together, they have the correct amount of chromosomes.

Mendel called genes as factors. In all the individuals, each inherited trait is determined by at least one gene from each parent.

An allele is an alternate form of a gene. If an individual is homozygous (YY or GG) for a trait, it has inherited the same allele from both parents. If it is heterozygous (YG), it has inherited different alleles for the trait.

This is a definition of principle of independent assortment. Stated in other words, the genes that determine a trait assort independently of the genes for other traits. As a result, new combinations of genes, present in neither parent, are possible.

Phenotype is the observable characteristic, including physical appearance. It results from the genotype and environmental influences. A phenotype includes not only easily measured traits like hair colour but also less apparent ones such as blood type.

In most cases, these alleles are totally responsible for determining blood type phenotypes. The inheritance usually follows simple Mendelian patterns.

Because of the Bombay Phenotype and other possible exceptions, the ABO blood type system is not conclusive in determining whether or not someone could be a parent of a particular child.

Karl Landsteiner discovered the ABO system in 1900 and 1901, while trying to understand why blood transfusions sometimes saved lives and at other times caused death.

If they produced anti-A antibodies, it would destroy their own blood. However, they do normally produce anti-B antibodies since B type blood would be alien to them.

The most life threatening problem is the result of Rh blood type incompatibility between a mother and her developing fetus.

The Rh system apparently is genetically much more complex since it involves 45 different antigens on the surface of red cells that are controlled by 2 closely linked genes on chromosome 1. In most cases, the ABO system is controlled by only 2 antigens.

The rules of dominance for the ABO system are that A and B are both dominant over O (i.e. O is recessive) and A and B are co-dominant.

In order for the fetus to be Rh positive, the father must also be Rh positive. As a result, when the mother is Rh negative and the father is Rh positive (or his Rh type is unknown), doctors usually assume that there will be a serious medical problem.

Alexander Wiener was an outstanding leader in the fields of forensic medicine, serology, and immunogenetics. His pioneer work led to discovery of the Rh factor in 1937.
Since the progeny could inherit A or O alleles from one parent and B or O alleles from the other, you could be any of the 4 ABO types. Look at the other answers to see how this could be true.

The Rh blood factor is a dominant trait. Therefore, both DD and Dd people have the Rh antigen on the surface of their red cells which makes them Rh positive.

Europeans have the highest frequency of Rh negative people (40%), which puts them at the highest risk for this problem. About 13% of newborn Europeans are at risk, but we can now prevent the life threatening complications in most cases.

If the father is homozygous dominant (DD) the chances of the fetus being Rh positive and an incompatibility problem occurring will be 100%. If the father is heterozygous (Dd), the chances are 50%. There will be no problem if the fetus is Rh negative.

In addition to suffering life threatening anemia, they also also suffers from jaundice, fever, quite swollen, and have an enlarge liver and spleen.

As a result of fetal blood entering the mother's system during her first pregnancy with an Rh positive baby, she will regularly produce antibodies to Rh antigens. They will pass through the placental barrier into her fetus and agglutinate its blood.

Since, type O blood normally lacks both A and B antigens, it will not be recognized as an alien type by the blood of anyone. As a result, anyone usually can be transfused with O blood without concern about rejection for this blood group.