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saul85 [17]
3 years ago
13

The brain has ______ major parts and they are called the ______.

Biology
2 answers:
Damm [24]3 years ago
5 0
The brain has THREE major parts, which are the BRAINSTEM, CEREBELLUM, and the CEREBRUM.
hammer [34]3 years ago
3 0

Answer:

3 major parts called the hindbrain, midbrain and forebrain

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1. In a population of 200 field mice, 98 mice are homozygous dominant for brown fur (FF), 84 mice are heterozygous (Ff), and 18
iVinArrow [24]
A.
The genotype frequencies can be determined by dividing the number of individuals with a genotype by the total number all the individuals. 
FF genotype frequency:
98÷200=0,49. There are approximately 5 <span>homozygous dominant mice in 10.
Ff genotype frequency:
84</span>÷200=0,42. There are approximately 4 <span>heterozygous mice in 10.
ff genotype frequency:
18</span>÷200=0,09. There are approximately 1 <span>homozygous recessive mouse in 10.

B.
To determine the frequency of an allele we can divide the number of times that the allele appears by the total number of alleles.
F allele frequency:
</span>\frac{(98*2)+84}{400}<span>=0.7
There are 7 F alleles in 10 random alleles.
f </span>allele frequency:
\frac{84+(18*2)}{400}=0.3
There are 3 f alleles in 10 random alleles.<span>
</span>
6 0
3 years ago
Beyond the organism, what is the correct order of the levels within the environment
Luba_88 [7]

<u>levels of organization </u>

from the smallest units of life to the largest units of the environment :

organelles >>> cells >>> tissues >>> organs >>> organ systems >>> organisms >>> populations >>> communities >>> ecosystems >>> biosphere

8 0
3 years ago
Which of these is a major function of RNA?
Contact [7]
To make nucleic acid

8 0
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Read 2 more answers
Which of these is an abiotic factor of an aquarium ecosystem?
Levart [38]
So abiotic means nonliving, so the only abiotic option is B. the gravel on the bottom of the aquarium.
8 0
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How does an enzyme’s active site relate to its substrate?
natita [175]
The active site is complementary to its substrate due to its specific 3D structure. The substrate fits in to one specific active site so an enzyme will only bind to one substrate. They are SPECIFIC. Lock and key theory.
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