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sweet-ann [11.9K]
3 years ago
15

"one shift in activation that occurs as children develop is from diffuse, larger areas to more focal, smaller areas. this shift

is characterized by _____, in which, areas of the brain not being used lose synaptic connections and those being used show an increase in connections"
Biology
1 answer:
IceJOKER [234]3 years ago
3 0
The answer would be synaptic pruning.

The brain in children will have a much more synaptic connection than adults. This connection is important for learning process in the early stage of life. More synaptic connections allow multiple parts the brain areas to be connected even if there is a damage in one area. 
The synapse will be cut down later in a process called synaptic pruning. Only the area that frequently used will be preserved.
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PLZ HELP ME Question 3
Flauer [41]

Answer:

It's impossible to predict the phenotype of the offspring by only observing the parents because DNA from their grandparents can affect the offspring as well.

Explanation:

DNA is combined from the parents to create offspring. When that offspring reproduces their children not only possess DNA from their parents but from their grandparents as well. Mixing together two separate DNA's from two different family trees can result in rare genetic mutations which results in the offspring looking different from their parents but showing resemblance to their grandparents. This is why you have to look at the phenotypes of more then just the two parents because there are more possibilities, including what their grandparents looked like.

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Viruses without envelopes are more susceptible to xmchemical biocides than viruses with envelopes​
DedPeter [7]
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2 years ago
True and False: (10-18) (1 point each) _____ Sedimentary rocks are an important source of information about the Earth's history.
Ann [662]

Answer:

_True____ Sedimentary rocks are an important source of information about the Earth's history. __False___ Hypothesis is a well-tested and accepted view that explains scientific observations. __True___ Elements are the basic building blocks of minerals. _True____ There have been 5 mass extinction events. __True___Hydrogen and Helium are used in the process of fusion __False___The oldest rocks are found in the upper sedimentary layers. __False___Intrusive rocks are found on the surface. _False____ Nonrenewable resources can be renewed in relatively short time spans __True___There is geologic evidence that the earth has experienced many episodes of mountain building and erosion.

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6 0
3 years ago
Choose all the answers that apply.
arlik [135]

Answer:

Option A, B, and C are correct

Explanation:

Incomplete dominance means that the trait represented by two alleles expresses themselves equally thereby hindering dominance of any of the allele completely.

Now,

Let us assume the allele of red petals be represented by "R" and the allele of white petals be represented by "r"

The pink flowers will have genotype "Rr"

Now if two pink flowers are crossed, the following offsprings are produced

Rr X Rr

RR, Rr, Rr, rr

Let us evaluate all the options one by one

a) Ration of pink flower to red flower ( Rr:RR)

There are 2 pink (Rr) flower and 1 Red (RR) , thus the ration of pink flower to red flower is 2:1. Option A is correct

b) one out of four offspring is white in color, therefore the % of white flower is

\frac{1}{4} * 100\\= 25\\%. Option B is correct

c) Two pairs RR and rr are homozygous, thus out of four offsprings two are homozygous. Therefore %of homozygous flowers will be

\frac{2}{4} * 100\\= 50\\%. Option C is correct

d) There are two heterozygous offsprings i.e Rr, therefore the % of heterozygous is \frac{2}{4} * 100\\= 50\\%. Option D is incorrect

e) half of the flowers are hybrid. Therefore option e is incorrect

Therefore, Option A, B, and C are correct

4 0
3 years ago
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