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Serga [27]
3 years ago
12

What is the reason cells go through the cell cycle? A. Growth, Repair , and Reproduction B. To engulf unhealthy cells C. To prod

uce eukaryotic cells. D. Living things come from non-living things​
Biology
1 answer:
zepelin [54]3 years ago
3 0

Answer:

I'm pretty sure the answer is A

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Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive allele in humans. A woman whose father
prohojiy [21]

Answer:

(a) 1/2; (b) no

Explanation:

Glucose-6-phosphate dehydrogenase deficiency (G6PD) is an X-linked recessive disorder and the woman's father was diseased so it means that woman is a carrier of the allele but has normal phenotype. It means that she will have XXᵇ genotype.

In contrast to this, her husband is diseased so his genotype will be XᵇY.

The Punnett square diagram related to the cross is attached.

(a) Proportion of their sons expected to be G6PD is 1/2:

They both may give birth to 4 progeny with genotypes XXᵇ, XᵇXᵇ, XY and XᵇY. It means they both may have 2 sons out of which one with genotype XᵇY will be diseased while the one with genotype XY will be healthy. So the proportion of their sons having G6PD is 1/2 or 50%.

(b) If the husband were G6PD deficient, the answer will not change.

The reason behind this is that this disease is caused by an allele located in X chromosome. But father contributes only Y chromosome to his son not X chromosome. The X chromosome will affect the genotype of his daughter not son that is why answer will not change. It means they will still have 1/2 of their sons diseased.  

7 0
3 years ago
How many openings are in the digestive system of flatworms?
zheka24 [161]
<span>How many openings are in the digestive system of flatworms? Answer: 1

Flatworms digestive system is called 2-way which mean the same opening is used for eat and removing waste. That's why it only has one opening. Human system is one way since we eat from the mouth and remove waste from the anus.</span>
5 0
3 years ago
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Circulatory system. confused!?!?
MatroZZZ [7]

I've learned that the circulatory system is responsible for transporting nutrients and blood throughout the entire body :D
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People of all ages were impacted by the expansion and availability of the internet in 1990s. this is an example of what kind of
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B. Modernization effect
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The process by which natural forces move weathered rock and soil brim one place to another is called
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The process by which natural forces move weathered rock and soil from one place to another is called erosion.

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3 years ago
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