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natita [175]
2 years ago
5

What is the name of the chromosomal condition that is the result of an error in meiosis, causing a human to have three copies of

chromosome 21?
Biology
1 answer:
Olenka [21]2 years ago
6 0
The name is Down Syndrome.
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URGENTTT
suter [353]

Answer:

D Independent assortment occurs when chromosomes separate during meiosis and causes variations that can be beneficial or harmful to a species

Explanation:

During meiosis, the homologous chromosomes separate and segregate independently of each other. This process is referred to as 'independent assortment'. In consequence, different gene variants or 'alleles' localized in homologous chromosomes segregate independently of each other during gamete formation, thereby one particular gamete has an equal probability to carry either of these segregating alleles. Independent assortment generates genetic variation in the gametes, which can be beneficial or deleterious in a given environment.

8 0
2 years ago
List the three laws of Newton in your words. Give an example of each.
OLga [1]

1. For every action there is an equal and opposite reaction

2. Force = mass times acceleration

3. An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted on by another force.

3. One example is a rock rolling down a hill. You could use a stick or your foot to stop it, but otherwise it would keep rolling

2. An example for law No.2 is pushing a shopping cart. If you push an empty shopping cart, it will go faster than a full shopping cart because the full shopping cart has more mass.

1. One example is a cup on a table. The cup exerts a force down on the table due to gravity, the table exerts an equal and opposite force on the cup to stop it falling through the table

3 0
3 years ago
Read 2 more answers
Which of the following statements is true?
vredina [299]

The awnser is B my good sir

8 0
3 years ago
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Which of the following statements about the sympathetic nervous system is true? A. Stimulation of the sympathetic nervous system
geniusboy [140]

Answer:

D. The nerves exit the central nervous system in the head and from the lumbar spine.

Explanation:

The preganglionic neurons transmit the nerve impulses through the cranial or spinal nerves that arise from the brain, to the postganglionic neurons from where the nerve fibers that relay these nerve signals to the different viscera and effector organs, located along the spinal cord

6 0
3 years ago
If a disease strikes the snake population in the food chain shown, what will be the initial effect on the populations of hawks a
Alecsey [184]
The answer is B. The hawks no longer have competition and the rabbits have one less predator.
8 0
2 years ago
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