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hichkok12 [17]
3 years ago
13

Will mark brainliest if correct!

Biology
1 answer:
nevsk [136]3 years ago
3 0

The answer is B. Muscle Fiber

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The first question is in the picture
Mice21 [21]
1. The cells specialize.
A crab has an exoskeleton.
Hope it helps!
6 0
3 years ago
Which type of weathering most often occurs in windy environments?
iren [92.7K]

Answer:

Abrasion

Explanation:

6 0
3 years ago
The paravertebral ganglia are connected via spinal nerves<br> inwhich region?
Alex777 [14]

Answer:

Answer is thoracic region.

Explanation:

Paravertebral ganglia are subdivision of peripheral sympathetic nervous system , which is one of the part of autonomic nervous system found in mammals. Its components are superior and inferior mesenteric ganglia and celiac.

The spinal nerves are peripheral nerves arising from the spinal cord. These spinal nerves are altogether 31 pairs. 8 in cervical, 12 in thoracic, 5 lumbar, 5 in sacral, and 1 in caudal.

There are two types of spinal nerves composed of the sensory and motor fibres.

7 0
2 years ago
PKU (Phenylketonuria) is an autosomal recessive disease, in which the synthesis of amino acid Tyrosine from Phenylalanine is blo
prisoha [69]

To calculate the frequency of the heterozygote genotype (Pq) for this gene we must use the Hardy-Weinberg equation ( p2 + 2pq + q2 = 1 ). This equation relies on the Hardy-Weinberg principle, a model in population genetics that states that the frequency of the alleles in a population is never changing, only the combinations (the genotypes) are changing.

If there are only two alleles (variations) of this gene in a population, then their frequencies should add up to 1 (100%). From this, we can calculate the frequency of the q allele.

p +q=1

0,3 +q=1

q= 1-0,3

q= 0,7

Now hat we have the frequency of the q allele we can use the HW equation to calculate the frequency of the heterozygotes.

p^{2} + 2pq + q^{2} = 1

(0,3)^{2} + 2pq +(0.7)^{2} = 1

0,09 + 2pq +0.49= 1

2pq +0,58= 1

2pq= 1-0.58

2pq=0,42

The freqency of the heterozygotes in this population is 0.42

6 0
3 years ago
Regulation of expression of genes is important because: Group of answer choices A. some genes function in opposition to other ge
Crazy boy [7]

Answer:

All of the above.

Explanation:

Regulation of the expression of genes refers to different processes tge cells use to increase or decrease the production of some gene content. It involve Turing gene on and off so as to ensure that appropriate genes are expressed at the right times. This allow organism to respond to changes in their environment.

7 0
3 years ago
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