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Nina [5.8K]
2 years ago
15

The gene for fur color in mice has two alleles, the allele for gray fur

Biology
1 answer:
Harlamova29_29 [7]2 years ago
8 0
B. Black fur
Hope this helps!
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When a potassium ion (K) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several c
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Answer:

C) primary cell wall --> plasma membrane --> cytoplasm --> tonoplast

Explanation:

When a potassium ion moves from the ground into a vacuole of a plant cell, it must pass through the different structures that are part of it.

First, the outermost layer of the cell is the cell wall. Plant cells may have a primary and a secondary wall, but the latter is not always present. The primary wall is always located outwards (and in the case of having a secondary wall, it will be located between the primary wall and the plasma membrane).

Then, inside the cell wall, we will find the plasma membrane (also called plasmalemma).

When crossing the membrane, the ion will be in the cytoplasm of the cell and will be directed towards the vacuole, which is surrounded by its membrane called tonoplast. The vacuole is an organelle that has no definite shape, although it is always surrounded by the tonoplast, and it contains different substances such as water and enzymes.

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Homeostasis is the ability to keep a stable internal state, despite changes in the environment. All living organisms must regulate their internal environment to process energy and survive. Hope it helps

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23) Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flow
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Approximately 190 would have red, terminal flowers.

<h3>What is True breeding?</h3>

Organisms with homozygous genes are referred to as true breeders in genetics. This indicates that both alleles are identical, making PP or TT preferable to Pp or Tt. All offspring produced from the union of true breeding organisms will share the same phenotypic as their parents.

<h3>What is true breeding in Punnett Square?</h3>

Both alleles of a gene are the same in genuine breeding strains. Due to the presence of just one type of allele, crossing two plants from the same strain will result in offspring with the same genotype and phenotype as their parents.

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