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marin [14]
3 years ago
11

Hypothesis: If I put a chocolate bar on the table near a sunny window, it will melt faster. If your independent variable is the

placement of the chocolate bar and the dependent variable is the speed at which it melts, what are some controlled variables that one must have during each trial?
Biology
2 answers:
BARSIC [14]3 years ago
8 0
The temperature of the room which way the sun is shining from
stich3 [128]3 years ago
7 0
Type of chocolate bar, size of it, surface it is placed on, etc

Controlled variables are anything that stay the same for both trials
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Evaluate the image below and discuss the information portrayed in Graph A, B and C
nataly862011 [7]

In A and B we see the number of phenotypes that can be found, in a case of polygenic inheritance, depends on the number of allele pairs involved

<h3>Genetic distance</h3>

The knowledge of the genetic distance between genotypes of a population of interest is important for a breeding program, as it allows the organization of germplasm and a more efficient sampling of genotypes.

<h3>Gaussian</h3>

The normal distribution is a very useful model in statistics, and it would not come as a surprise as the sum of independent effects (or not very correlated effects) should, if there were many of them, normally distribute (always subject to certain assumptions).

With this information we can conclude that in graph <u>A</u> we see a higher frequency of medium-sized individuals, showing zygosity, and in <u>B</u>, <u>heterozygosity</u>.

Learn more Phenotypes about in brainly.com/question/20730322

7 0
2 years ago
Do stomata close when there is a lack of water in soil or a lack of carbon dioxide in the atmosphere?
Arte-miy333 [17]

<em>When water is abundant:</em>

-Temporal regulation of stomata is used:

Open during the day

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-  If the leaf's CO2 concentration is low, the stomata will stay open to continue fueling photosynthesis.

- High temperatures will also signal stomata to close.

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5 0
3 years ago
A contracting skeletal muscle fiber typically shortens as all of its ______ shorten in length.
Genrish500 [490]

Answer:

 sarcomeres

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2 years ago
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Jobisdone [24]

Answer:

prenatal environments

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Depending on the number of fertilized eggs and when the zygote division occurs, there are different types of twins. For example, If the zygote is formed by the union of an ovule and a sperm that after fertilization is divided to create two embryos, they are born identical twins, these babies carry the same genetic information.

4 0
2 years ago
Most caecilian species are totally blind as adults how do you think this characteristic has evolved?
geniusboy [140]
Your answer would be

<span> The eyes have atrophied (lack of use). 

Hope I helped!!</span>
6 0
3 years ago
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