Answer:
In the case of these two parents, a quarter of their children would have blue eyes.
Explanation:
It is not only possible, it is expected that this would happen an appreciable fraction of the time. Brown eyes are dominant. Suppose eye color were dependent on a single Mendelian gene with two alleles, Br for Brown eyes and Bl for Blue eyes. (As Tracey Bryan has explained, this is not true -- I want to explain what the answer would be even in the simple case.) This means the three possible combinations of two alleles give the following eye colors:
BrBr => Brown
BrBl => Brown
BlBl => Blue
Now suppose two brown-eyed people have a child. We can't tell from the fact that they have brown eyes which pairs of alleles they have. Each of them could have either BrBr or BrBl. Suppose they each have BrBl. When they are crossed (i.e., they have a child), the child gets one allele from its mother -- it has a 50-50 chance of getting either one -- and one allele from its father -- again it has a 50-50 chance of getting either one. So, the child has:
25% chance of getting Br from mother and Br from father => brown eyes;
25% chance of getting Br from mother and Bl from father => brown eyes;
25% chance of getting Bl from mother and Br from father => brown eyes;
25% chance of getting Bl from mother and Bl from father => blue eyes.
So in the case of these two parents, a quarter of their children would have blue eyes.
Carbohydrates, lipids, and nucleic acids
hope this helps :)
An ecosystem is defined as a place where organisms interact with one another and with their physical surroundings. The most common phosphorus reservoir in the ecosystem is the sedimentary rock. Add to that, it is believed that phosphorus cycle actually starts in these types of rocks. Through the process of weathering, phosphates are being carried by the rain or water and are dispersed to the soil and different bodies of water. Plants become reservoirs, as well, because they latch o<span>n the phosphate ions from the soil.</span>
A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being neutral.
Answer:
Immune system is responsible to fight against foreign invaders from affecting the body system,immune system acts as a security against any offence microorganisms from have access to the body, thereby prevent illness. It is so important to have functioning immune system for an individual to be healthy, for example HIV destroys the immune system, therefore making it possible for a lot of diseases crept in
