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Lina20 [59]
3 years ago
6

Alisha and Rob would like to have children. A genetic counselor tells them that they are both carriers of a certain genetic dise

ase. What does this mean?
Biology
1 answer:
kupik [55]3 years ago
8 0

Hi there!

With mendelian genetics and inheritance, it assumes that there are two alleles (a variant of a gene) for every trait, one from each parent. These two alleles can be dominant or recessive. This would result in different exhibitions of traits - as long as there is only one dominant allele, then the dominant trait is exhibited, even if there is the recessive allele. However, if there are both recessive alleles, then it is the recessive trait which is exhibited.

When a person is a carrier of a trait, in this case a genetic disease, it means that they carry the allele for the disease, but don't exhibit it. This would mean that the allele would be recessive, however they would also have a dominant allele which "overrides" this disease.

Hope this helps!

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Answer:

c. Factors 1 and 2 may be influenced by both nature and human factors

Explanation:

The sea level rising and the change in the atmospheric gases are both processes that are influenced by the nature, as well as by the human activities. Naturally, the earth has its own cycles, known as Milankovich cycles, through which the Earth warms up, or cools down, resulting in change of the atmospheric gases, and in accordance to that, change in the sea levels depending on the global climate. The humans to have become a big factor in the past few hundred years. The reason for that is that the humans with their activity started to release lot of greenhouse gases into the atmosphere, especially CO2 and methane. That has been changing the composition of the atmosphere, and the temperatures have been rising. The higher the temperatures, the more ice is melting around the poles and on the high mountains, resulting in an increase in the sea levels.

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3 years ago
Natural selection occurs in a population of organisms of the same species when the individuals
taurus [48]

Natural selection occurs in a population of organisms of the same species when the individuals are C. are genetically different and exhibit different characteristics.

<h3>What is the Natural selection?</h3>

Natural selection most effective acts at the populace's heritable trends: choosing for useful alleles and, thus, growing their frequency withinside the populace, at the same time as choosing in opposition to deleterious alleles and, thereby, reducing their frequency. This procedure is referred to as adaptive evolution.

  1. Natural selection can most effective arise if there may be variant amongst contributors of the equal species.
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What makes different types of blood different?
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