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lions [1.4K]
3 years ago
9

Plant tissue culture is a method of asexual reproduction used to produce clones of a plant with desirable traits. Plant tissue c

ulture relies on the fact that plant cells have the ability to regenerate a whole plant. Single cells are dosed with certain chemicals that trigger dividing cells to produce roots, shoots, and leaves. Which tenet of cell theory BEST serves as a basis for this type of biotechnology?
Biology
2 answers:
stepan [7]3 years ago
7 0
The answer is Cells come only from pre-existing cells.

There are three tenets of cell theory:
1. All living organisms are composed of one or more cells.
2. Cells are the basic structural and functional units in all living organisms.
3. <span>Cells come only from pre-existing cells.

In plants tissue cultures, single cells divide to produce roots, shoots, and leaves. This division suggests there must be some pre-existing cells from which those organs will be produced. So, the tenet that cells come from other cells in cell division is a basis for plant tissue cultures.</span>
svetoff [14.1K]3 years ago
3 0

Answer:

The answer is Cells come only from pre-existing cells.

There are three tenets of cell theory:

1. All living organisms are composed of one or more cells.

2. Cells are the basic structural and functional units in all living organisms.

3. Cells come only from pre-existing cells.

In plants tissue cultures, single cells divide to produce roots, shoots, and leaves. This division suggests there must be some pre-existing cells from which those organs will be produced. So, the tenet that cells come from other cells in cell division is a basis for plant tissue cultures.

Read more on Brainly.com - brainly.com/question/1273090#readmore

Explanation:

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A man and his wife both have normal color vision, however their daughter is positive for red-green color blindness. The man sues
mixas84 [53]

Answer:

Man's genotype: XᴮY

Woman's genotype: XᴮXᵇ

Daughter's genotype: XᵇXᵇ

The daughter is not the man's child.

Explanation:

Color blindness is a sex-linked trait caused by a recessive allele located in the X chromosome (Xᴮ=normal vision; Xᵇ-color blind).

Women have two X chromosomes, while men have an X and a Y chromosomes. For that reason, women need to have two recessive alleles to be color blind, while men only need one Xᵇ to be colorblind.

Since the man has normal color vision, his genotype would be XᴮY.

If the daughter is her father's, she would have inherited his dominant Xᴮ allele, so she would have normal vision. However, she is colorblind, so her genotype is XᵇXᵇ. She is not the man's daughter.

The mother also has normal color vision, but her daughter inherited a recessive allele from her, so her genotype is heterozygous XᴮXᵇ.

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