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2 years ago

What happens to the genetic material before the cell divides

2 answers:

8 0

Because each chromosome is made from a single molecule of 'DNA', before a cell divides itself, it had to replicate and copy its DNA. This makes it so that after cell division, each new cell holds an exact copy of the genetic material from the original cell.

I hope this helps! :)

VladimirAG [237]2 years ago

7 0

Answer:

DNA is duplicated, or copied

Explanation:

Hope this helps

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A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants.

mixer [17]

Answer:

B. a graduated cylinder to measure 30 mL of water for each plant daily

Explanation:

<em>Option A is incorrect because an electronic balance is used to measure the mass of an object and not the volume.</em>

<em>Option C is incorrect because a metric ruler is used to measure the dimension of objects and not the mass.</em>

<em>Option D is incorrect because a thermometer is used to measure temperature and not pH.</em>

The correct option is B. A cylinder is applicable in the measurement of volume of liquids.

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4 years ago

A major function of the ____ division of the autonomic system is the fight-or-flight response in reaction to a threat

Maksim231197 [3]

Autonomic nervous system (ANS) is the branch of the nervous system that provides unconscious control of basic body processes that is consists of two divisions; the sympathetic and parasympathetic. These two divisions have opposing effects on the internal organs they innervate. The Parasympathetic nervous system is the division that balances the actions of the sympathetic nervous system by slowing body processes, returning the body to homeostasis once a stressor has passed. The Sympathetic nervous system is the emergency system. Its major function is the fight-or-flight response in reaction to a threat. It speed-up key body processes to prepare the body for physical action.

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3 years ago

Atomic number is the number of an atom's <br>

fenix001 [56]

Answer:

Explanation:

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element

3 0

4 years ago

Please help ASAP !!

exis [7]

Answer:

1. Black

2. Yellow

3. Bb (or BB)

4. bb

Explanation:

So they breed two black fur coats and get 75% black fur. This means that Bb is 75% too, making it black fur. The 25% (recessive) would be yellow.

7 0

3 years ago

Read 2 more answers

mutation and migration introduce new alleles into populations. what is the most likely principal force that will shift allelic f

shepuryov [24]

The most likely principal force that will shift allelic frequencies within large populations is the genetic drift.

<h3>What is the genetic drift?</h3>

Genetic flow describes random fluctuations withinside the numbers of gene editions in a population. Genetic drift describes random fluctuations withinside the numbers of gene editions in a population.

Genetic drift takes area whilst the incidence of variation varieties of a gene, known as alleles, will increase and reduces through hazard over time. These versions withinside the presence of alleles are measured as modifications in allele frequencies.