Which of the following is true regarding the cell theory choose all that apply?

Biology

2 answers:

emmasim [6.3K]3 years ago

6 0

Answer:

The correct answers are option C and D.

Explanation:

The three basic sayings of the cell theory are that all the living components are formed of cells, the cells are the basic unit of all living species, and all the cells originate from the preexisting cells. All the living things, that is, from microscopic species to the largest one like whale, are all formed of cells. These cells can differ broadly, however, all the living components are formed of cells.

The cells in a living being cannot be further dissociated into any more level. Like the atoms and matter, the cells and living species are associated, that is, at their most basic level, the living species are formed of cells.

Arada [10]3 years ago

4 0

C. cells . are the basic units of life

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Which of the following water filtration methods requires the use of a membrane or filter?

Keith_Richards [23]

Answer:

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Explanation:

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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.