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egoroff_w [7]
3 years ago
8

Two garden plots were planted with corn. The soil was similar in each, and equal amounts of water were applied to each plot. One

plot was fertilized, and the other was not. The experimenters measured the yield as bushels of corn from each plot. The corn in the plot that did not receive the fertilizer was the .
Biology
1 answer:
neonofarm [45]3 years ago
8 0

Answer: control plot

Explanation:

Control plot refers to the plot that couldn’t receive the experimental treatment such as fertilizer and or variable being tested while another plot receive fertilizer can give proper yield.  It is just because, fertilizer is the main source or substance that provides chemical elements that may necessary for corn plant growth and its development.  There are two main types of fertilizers such as organic and inorganic, among them organic fertilizer usually contains different nutrients that broken down by different microorganism and then used by such plants to grow effectively.

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If you have a pet cockroach with a brown body, how could you find out if it is
aleksklad [387]

Answer:

by testcrossing with a homozygous recessive partner

Explanation:

<u>If a pet cockroach exists whose zygosity is unknown, this can be determined by a test cross. A test cross involves crossing an organisms whose zygosity is unknown with a partner that is homozygous recessive for the same trait.</u>

Let us assume that brown body is represented by the allele B, the dominant allele. The homozygous recessive version would be bb.

The genotype of a brown cockroach whose zygosity is not known can be denoted as B_, where '_' can be a 'B' or a 'b'.

When B_ is crossed with bb:

B_   x   bb

Progeny

2 Bb

2 _b

The phenotype of Bb would be brown (since B is dominant over b) while the phenotype of _b would depend on the zygosity level of the cockroach.

If the unknown genotype is BB, then _b becomes Bb and the phenotype will be a brown body. This means that all the progeny will appear brown. (<em>see the first attached image for the Punnet's square</em>)

In other word, if the unknown genotype is bb, then _b becomes bb and the phenotype will be a alternate color (non-brown) body. This means that 50% of the progeny will appear brown while the remaining 50% will be in the alternate color. (<em>attached</em>

3 0
3 years ago
If two parents do not have widow's peaks, what is the probability that their child will have a widow's peak?
serious [3.7K]

Their child can not have a widow's peak, seeing as widow's peak is a dominant trait. They need two recessive alleles to have a straight hairline, meaning none can be inherited by the child.

Hope this helps.

7 0
3 years ago
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Why do you think people were Initially apprehensive to accept the theory presented by Copernicus?
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Answer:Most experts rejected this revolutionary theory, In Europe at the time, all scientific knowledge and many religious teachings were based on the arguments developed by classical thinkers. If Ptolemy's reasoning about the planets was wrong, they believed, then the whole system of human knowledge might be called into question.

Explanation:

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Easy. All life on this planet are products of DNA. It is what we all have in common.

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What is the independent variable in farmer browns experiments
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What are the experiments?
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