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Taya2010 [7]
3 years ago
9

What is the majority of a negative charge on the water molecule

Biology
1 answer:
shusha [124]3 years ago
3 0
found in the oxygen atom
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Suppose a couple has come to see you to discuss the probability of their children having cystic fibrosis (CF). CF is known to be
m_a_m_a [10]

Answer:

The children that the couple may have a 25% chance of having cystic fibrosis and 75% chance of being carriers for the CF gene

Explanation:

We know that both parents are in the same situation. Let's start for example with the mother. She has one parent and one sibling with cystic fibrosis (CF). So, supposing that the allele of the gene that causes the disease is <em>"f"</em>,  as the disease is autosomal recessive, both, the parent and the sibling have the genotype ff.

Also, knowing that the other parent has a normal phenotype, but the sibling has CF, we deduce that the other parent of the mother must have a <em>Ff</em>.

So, <em>despite the mother's phenotype is normal, her genotype is Ff</em> (see the Punnett square 1) Couple's parents in the attached image). In other words, she is a carrier for the CF gene.

As the parents' situation is analogous, <em>we can deduce that the father also has a genotype Ff  </em>and is also a carrier for the CF gene.

Now, if we look at the Punnett square for them  (see the square 2) Couple in the attached image), we see that all their children will always have at least one copy of the CF allele, <em>f</em>.

More specifically, their children have 25%  chance of having cystic fibrosis and 75% chance of having a normal phenotype but being carriers of the CF gene.

6 0
3 years ago
¿Que son las ciencias terrestres?
Alexxx [7]

Las Ciencias de la Tierra o Geociencias conciernen y engloban las disciplinas que estudian la estructura, morfología, evolución, y dinámica del planeta Tierra. Constituye un caso particular de las ciencias planetarias, que se ocupan ellas del estudio de los planetas del Sistema Solar.

8 0
3 years ago
Although the flashlight shines with the same intensity in both cases, less energy is absorbed by photovoltaic cell 2. Which feat
Nuetrik [128]
B is the correct answerrrrrrrr
7 0
3 years ago
In which cell structure are ribosomes produced
Alinara [238K]

Answer:

the nucleolus

Explanation:

the internet

6 0
3 years ago
Read 2 more answers
In humans, what gamete determined the sex of an offspring?
kari74 [83]

In humans, the "male gamete determines the sex of an offspring because it may contribute either an X or a Y chromosome"

<u>Answer:</u> Option C

<u>Explanation:</u>

Human sex gets decided by the function of SRY gene which possessed by with or without of Y chromosome. The hormone of anti-mullerian and testosterone produced from cells when activating the SRY gene. It generally confirms the development of single-male reproductive systems.

The scenario in humans, the sex ration gets affected by the male parent's hormone level. Also, in XY sex evaluation system, the sperm of male takes part in X or Y chromosome whereas the ovum from female contributes to X chromosome. This greatly results in offspring - either male (XX) or female (XY).

5 0
3 years ago
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