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Hunter-Best [27]
3 years ago
5

PLEASE HELP!

Biology
1 answer:
LenaWriter [7]3 years ago
6 0
According to Mendel's experiment if we construct a punnet square the expected ratios should be 9:3:3:1. From our experimental results,
purple smooth = 75 ( 0.56) the expected is 0.56
white smooth   = 28 ( 0.21) expected is 0.19
purple wrinkled= 24 (0.18) expected is 0.19
white wrinkled = 8 (0.06) expected is 0.06
From this results we plug the observable and expected values in a chi-square which is used to account for the differences between the expected and observable values. Then we conclude that the deviation of the observable value from the expected value is probably due to random sampling error and therefore we accept the hypothesis, such that the results are in consistent with the law of assortment.
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The principal reason for declining natural increase rates in less developed countries today is
Nastasia [14]

Answer:

Declining crude birth rates.

Explanation:

Birth rate may be defined as the number of births takes place per year per thousand of the population. The birth rate and death rate may change the population dynamics.

The developing countries shows the expanding population graph as they have more number of people of the reproductive age. The advancement in the medical field results in the decline birth rate that causes the decline of the nature resources.

Thus, the answer is declining crude birth rates.

7 0
3 years ago
Which one of the following is an example of a prokaryote
Temka [501]
<span>Prokaryotic organisms lack membrane bound nuclei as well as organelles. 
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Examples

-bacteria
-algae
6 0
3 years ago
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Mammalian evolution began with the evolution of the first synapsids. What is the defining synapomorphy of synapsis?
Feliz [49]

Answer:

b. a single temporal fenestra

Explanation:

Synapsids have a temporary fossa in the lower part of the temporal bone. These reptiles mamiferoides only have a single inferior temporal fenestra.

The synapsids were the first amniots to diversify and appeared  in the middle of the Carboniferous. These first synapses were characterized by the presence of a single temporary fenestra behind each orbit, through which the mandibular muscles pass.

4 0
3 years ago
Which of earth's systems was most affected by fossilized dinosaurs?
soldier1979 [14.2K]
I think it's lithosphere thanks for posting your questions on Brainly
7 0
3 years ago
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Which of the following locations will be relatively warmer during summers, and why? An inland location, because water heats up f
Katen [24]

Answer:

An inland location, because land has lower specific heat than water

Explanation:

The specific heat is a measure of how much heat must be supplied to warm up a substance by a certain number of degrees.

Water has a much higher specific heat than land, so it takes much more heat energy to heat up a given mass of water compared to the land.

To say it another way, the specific heat of land is much less than that of water, so it doesn't take as much heat energy to warm up the land.

Thus, an inland location will be relatively warmer during summers.

5 0
3 years ago
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