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Monica [59]
3 years ago
15

Crossing over happens during A. Anaphase 1. B. Metaphase 1. C. Any phase in meiosis. D. Prophase 1.

Biology
1 answer:
postnew [5]3 years ago
3 0
D. Prophase1 because this has to happen first so the rest of the stages can continue with their own events 
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PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!! I ONLY HAVE 20 MINUTES LEFT ON THE TEST
forsale [732]

Most of the cells in the human body are diploid.

Diploid is a cell or organism that has paired chromosomes, one from each parent. In humans majority of the cells are diploid and have 23 pairs of chromosomes. The exception are the human sex cells (egg and sperm cells). These contain a single set of chromosomes and are known as haploid.

5 0
3 years ago
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The major cause of water pollution by industries involves
Luba_88 [7]

Answer:

Toxic chemicals is a major cause of water pollution. In most cases, the toxic chemicals came from the residual from production process after companies done making their product

Explanation:

3 0
2 years ago
which structure in leaves allows the gaseous reactants and products of photosynthesis to move in and out a b c d
Zepler [3.9K]

Answer:

Stomata

Explanation:

Photosynthesis is a unique phenomenon which occurs in the Chloroplast of plant cells. It is the way they synthesize their food in form of glucose. However, like every metabolic reaction, photosynthesis requires certain reactants and products.

Photosynthesis combines carbondioxide (CO2) gas and water (H2O) in the presence of sunlight to produce Glucose (C6H12O6) and oxygen gas (O2). The gaseous components of this metabolic activity enters (C02) and leaves (O2) the plant via a structure in the leaves called STOMATA.

STOMATA is a pore found in the epidermis layer of plant leaves that aids in the exchange of gases i.e. carbondioxide in, oxygen out during Photosynthesis.

8 0
3 years ago
The movement of particles from an area of high<br> concentration to an area of low concentration
Montano1993 [528]

Answer:

Passive Transport

Explanation:

The movement of molecules from an area of High concentration to an area of lower concentration in a living cell is called Passive Transport.

Passive Transport does not require energy input.

An example is Diffusion.

5 0
2 years ago
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stiv31 [10]

Answer:

1. specialized cells

2. extracellular protein fibers

3. a fluid known as ground substance

Explanation:

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