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shutvik [7]
3 years ago
14

Where does gas exchange occur between the blood and tissues?

Biology
1 answer:
BartSMP [9]3 years ago
7 0

jjj

idk

Explanation:

vete al hospital porque me voy de la casa nunca se me olvido

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Which of the following would NOT be found in the stomach ?
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The only thing that won't be found in the stomach is the Villi.

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Describe the process of cell division in a plant cell.
o-na [289]

Answer:

Cytokinesis in a plant cell: the cell plate forms down the middle of the cell, creating a new wall that partitions it in two. Cytokinesis, the division of the cytoplasm to form two new cells, overlaps with the final stages of mitosis.

Explanation:

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3 years ago
The organisms of population and population B are now in capable of interbreeding and producing Offspring which biological proces
Bumek [7]

Answer:

Natural selection.

Explanation:

Natural Selection:

Natural selection is the evolution's one of the basic mechanism in which phenotypic variant individuals or organisms survive or reproduce with change in the heritable traits in a population over generations. With the passage of time, this process help the organisms to adapt their environment.

So, the population A and population B organisms interbreed and produce offspring with the process of natural selection.

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3 years ago
Sixty flowering plants are planted in a flowerbed. forty of the plants are red-flowering homozygous dominant. twenty of the plan
myrzilka [38]

Answer:

The flowering population is in Hardy Weinberg equilibrium.

Step by Step Explanation:

Total initial population size = 60

As both the populations are homozygous so the frequency of alleles will be,

P = 80/120= 0.66

q = 40/120= 0.33

The predicted frequencies for genotypes once the population has reached Hardy-Weinberg

p2 = 0.4356

2pq= 0.4356

q2 = 0.1089

The number of plants with each type of flower in a papulation of 420 is,

Homozygous dominant= 185

heterozygous= 185

Homozygous recessive= 50

Chi square analysis:

The observed values for red-flowered plants, pink-flowered plants, and white-flowered plants are not significantly different from the expected values predicted by Hardy Weinberg equilibrium.

Phenotype      observed(o)    expected (e)          (o-e)2/e

Red                        178                 185                       0.26

Pink                       190                 185                       0.135

White                     52                   50                     0.08

                                       chi-square = 0.474

With 2 degree of freedom this chi-square gives a p value of 0.7 - 0.8, which is not significant.  

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3 years ago
How many stages are there in cellular respiration?
Taya2010 [7]

Answer:  three stages

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