Complete question:
Question: When crossing two individuals, the offspring display only one of the two traits found in parents. Which principle of Mendelian genetics is supported by this observation?
a) segregation
b) independent assortment
c) dominance and recessiveness
d) allele frequency
Answer:
c) dominance and recessiveness
Explanation:
According to Mendel's principle of dominance and recessiveness, the alleles of one gene may be dominant or recessive in nature. When present together, only the dominant allele is able to express itself. Therefore, a hybrid individual for a gene would express only the dominant phenotype. In the given cross, the progeny express only one of the two traits found in the parents. This means that the progeny is heterozygous for the trait and is expressing the dominant trait. The recessive trait is not expressed due to the presence of the allele for the dominant trait.
The answers include the following:
- The maps show that northern areas should get more precipitation, regardless of emission levels.
- Southern areas will likely get less precipitation, regardless of emission levels.
- These maps to prepare for natural disasters in the Great Plains, scientists need to ask how can we protect people and property in the event of a flood or a drought.
<h3>What is Drought?</h3>
This is referred to a period in which there is shortage of water due to reduced rainfall.
This leads to decrease in food production and the map patterns will help protect the people.
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The frequency will be one in a ten thousand, in a real life situation. The X-linked recessive disorder has the same frequency as that of its frequency in the men. The frequency in women is close to zero, and in 5000 men, it will be one, so in total, the allele frequency will be 1/10000.
When we use a Punnett sqare, it comes out that 0% of the females will have he disease. But, as 50% of the eggs of the mother will carry a recessive allele, 50% of the male offprings bear the cahnces of being affected, i.e., 25% of the total offsprings, which mean 2500 male children bear the chance of having Hemophilia.
Here are the answers to the given statements above:
1. TRUE. It is true that in the <span>male fetal pig has the urogenital tract near the umbilical cord.
2. TRUE. It is true that u</span><span>rea, a waste product, is collected from all the tissues of the body by the circulatory system and is selectively removed from the blood by the kidneys.
3. TRUE. It is true that t</span><span>he body of the fetal pig can be divided into the head, neck, thorax, and legs.
4. TRUE. It is true that t</span><span>he trunk can be divided into two regions: the anterior thorax and the more posterior abdomen. They are separated internally by a diaphragm.
5. TRUE. It is true that i</span><span>n the circulatory system, blood is returned to the heart.
Hope these help.</span>
