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Kisachek [45]
2 years ago
9

What would you need to do to your model to make it look like a true DNA molecule?

Biology
1 answer:
Marta_Voda [28]2 years ago
6 0

Answer:

To make your double helix, twist your model slightly so the molecule forms a spiral. DNA molecules have a right handed helix shape that winds in one direction. You can figure out the direction by sliding the fingers of your right hand along the backbone. brainliest please?

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Assume that an organism exists in which crossing over does not occur, but that all other processes associated with meiosis occur
expeople1 [14]

Answer:

The options are missing, they are:

a.The daughter cells of meiosis I would be diploid, but the daughter cells of meiosis II would be haploid.

b.The two sister chromatids of each replicated chromosome would no longer be identical.

c.The four daughter cells produced in meiosis II would all be different.

d.The two daughter cells produced in meiosis I would be identical.

e.There would be less genetic variation among gametes.

f.Independent assortment of chromosomes would not occur.

The correct answer is E, there would be less genetic variation among gametes.

Explanation:

Crossing-over or also called recombination is a phenomenon peculiar to meiosis alone. Meiosis is that kind of division that is employed by sexual-reproducing organisms to produce gamete/sex cells. Crossing-over is a process that may or may not occur, if it does, it occurs in prophase of meiosis I, and it involves exchanging equal chromosomal segments between two non-sister chromatids or homologous chromosomes. Crossing-over is the means by which sexually reproducing organisms use to bring about genetic variation among their species.

It is worthy to note that the non-occurrence of crossing-over does not affect the number of chromosomes as a normal meiotic division will always yield haploid gametes right from meiosis I.

Since crossing-over did not occur, the homologous chromosomes (similar but non-identical chromosomes) will separate into each cell during meiosis I, meaning that each cell will have chromosomes that are either maternal or paternal. This will reduce the chance of genetic variation occuring among species.

7 0
3 years ago
What factors will effect how much gravity<br> accelerates a falling object?
hammer [34]

Answer:

Mass and distance

Explanation:

Gravity is the force that gives weight to objects and causes them to fall to the ground when dropped. Two major factors, mass and distance, affect the strength of gravitational force on an object. You witness the first factor in everyday life - more massive objects are heavier.

3 0
3 years ago
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Which of the following pollutants are NOT released from FARMING
Lina20 [59]
Tailings is the right answer.
8 0
2 years ago
Mendel knew that the variations in the offspring
larisa [96]

Answer:

controlled the fertilization process.

Explanation:

Mendel took precautions to avoid contamination by pollen through self pollination of the P generation. He controlled the fertilization processes between the plants. He self pollinated the first pureline varieties to form the P generation. He then cross pollinated them to get F1 generation. Every step of his experiment was controlled.

7 0
3 years ago
Main difference bwteen fats and oils
docker41 [41]

fats are composed of high amounts of saturated fatty acids which are solid at room temperature and oils are composed of mainly unsaturated fatty acids which are a liquid at room temperature

4 0
3 years ago
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