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3 years ago

The points of muscle attachment are known as the

Biology

1 answer:

Alik [6]3 years ago

3 0

Answer:

Origin and Insertion

Explanation:

The origin is the point of attachment of a muscle that remains relatively fixed during contraction.

The insertion is the point or mode of attachment of a skeletal muscle to the bone or other body part that it moves.

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What caused protests in South Vietnam during the presidency of Ngo Dinh Diem?

VikaD [51]

"Diem began policies that were oppressive to Buddhists" is the one among the following choices given in the question that <span>caused protests in South Vietnam during the presidency of Ngo Dinh Diem. The correct option among all the options that are given in the question is the second option or option "B".</span>

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4 years ago

Bacteria, viruses, fungi, and protozoans can all cause different diseases.

lapo4ka [179]

A. True................

8 0

3 years ago

How do continents move?

rodikova [14]

Answer:

Tectonic plates.

Explanation:

The continents are embedded in the plates, like logs in the ice of a frozen river. As the plates move, the continents move with them. When two continental plates meet, one is dragged down beneath the other.

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3 years ago

Read 2 more answers

Consider a locus with two alleles - A and a. These alleles are codominant, meaning that the fitness of the heterozygote is halfw

bearhunter [10]

Answer:

Question 1.

The mean relative fitness is 0.85

Question 2.

The expected allele frequency change of A, p = 0.63: AA, p2 =0.63 x 0.63 = 0.39.

Explanation:

Mean relative fitness is given as

p2W(AA) + 2pqW(Aa) + q2W(aa).

Where W(AA)= 1.00, W(Aa) = 0.80, W(aa) = 0.60

Firstly, find p2, 2pq, q2 which are the frequencies of AA, Aa and aa respectively.

AA= 500,Aa=250 ,aa=250. Total is 1000

Frequency of A, p=

250/2)+500= 625.

625/1000= 0.625.

Therefore A, p is 0.625

p2 = 0.625x0.625= 0.39

For q, since p+q =1

q= 1 - 0.625 = 0.375

q2= 0.375x0.375=0.14.

2pq= 2x0.625x0.375= 0.47.

Mean relative fitness is

p2W(AA) + 2pqW(Aa) + q2W(aa).

0.39x1+ (0.47x0.80) + (0.14x0.60)=0.85.

Question 2.

From Hardy-Weinberg equilibrium

F = p2 + 2pq + q2.

Frequency of A, p= 0.625 and AA, p2 is 0.625 x 0. 0625= 0.39.

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3 years ago

Which of the following statements about CpG islands is correct?a. CpG islands are commonly found at the 3′ UTR regions.b. The Cp

sladkih [1.3K]

Answer:

c. Methylated CpG islands is associated with long term gene repression.

Explanation:

The CpG sites or islands is a biological term that describes the genomic regions in which CpG sites occur; a region of DNA, in which cytosine nucleotide is followed by a guanine nucleotide in the linear sequence of bases along its 5' → 3' direction.

The CpG islands is characterized with a high frequency of CpG sites, with at least 200 bp, a GC percentage greater than 50%, and an observed-to-expected CpG ratio greater than 60%.

The existence of CpG islands is also associated with low levels of methylation in that genomic area, which has to do with the regulation or repression of gene expression

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3 years ago