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2 years ago

How would you expect the sternal ends of grandmothers and grandfathers ribs to look?

2 answers:

3 0

I believe that the answer to the question provided above is that the sternal ends of elderly people would be must in curved compared to those who are young.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

Ronch [10]2 years ago

3 0

Explanation:

The sternal ends of the ribs are used in determining the age of unknown adult.

There is a significant difference in the young and old peoples' spine and the rib components. The vertebral segments of the older rib has higher angles than than younger ones. The sternal ends of the ribs in grandmothers and grandfathers have high aspect ratio and more end to end span.

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In the Miller-Urey experiment, electrical sparks were passed through a mixture of gases, including hydrogen, water vapor, methan

STatiana [176]

Answer:

The answer is B. Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth.

Explanation:

Miller-Urey Experiment:

The Miller-Urey experiment was an attempt to explain the origin of life on Earth. Miller-Urey simulated the primordial soup i.e. the environment of primitive Earth to prove the spontaneous generation of organic molecules. The conditions they introduced included:

A methane-ammonia-hydrogen and water mixture that exactly simulated the primordial soup.
A spark of 70,000 volts that simulated lightening.
A temperature of 800 degree Celsius.

Observations:

After running for 18 days, the final solution was examined for presence of organic molecules.
Miller-Urey observed that most of the methane and ammonia had been consumed and the mixture contained carbon monoxide and nitrogen.
The solution further contained 25 amino acids (mainly, glycine, alanine and aspartic acid) , several fatty acids , hydroxy acids and amide products.

The experiment concluded that simple organic compounds such as amino acids could have been formed through spontaneous generation under the Earth's primitive environmental conditions.

5 0

1 year ago

Determine the median value for foot width for males and for females. Describe in complete sentences the method you used to deter

Ipatiy [6.2K]

Answer:

This question is incomplete because of the absence of the data referred to in the question

Explanation:

This question is incomplete but the data referred to in the question is attached below

In order to determine the median value of any set of data, the data is first of all rearranged chronologically (ascending) and then the middle value is picked if the number of data is odd but if the number of data is even, the two middle values are added together and then divided by two to get the median.

From the data provided, the values (which are 10 in number) can be arranged as shown below (with the median values in bold)

Females: 5, 7, 7, 7.5, 7.5, 7.8, 7.8, 8, 8, 17

Males: 4.5, 7.5, 9, 9, 9.2, 9.3, 10, 10, 10.5, 13

Since the number of data is even, the two middle numbers (in bold) shall be added together and then divided to get the median as shown below

The median value for the females foot width is = 7.5 + 7.8/2 = 7.65 cm

The median value for the male foot width is = 9.2 + 9.3/2 = 9.25 cm

4 0

1 year ago

In Kerr and Wright's experiment with 96 fruit-fly populations, only 4 males and 4 females bred in each generation. After 16 gene

Svetradugi [14.3K]

Answer:

2.Less than 73% of the populations would have only one allele present.

Explanation:

The two alleles chosen do not affect the fitness of flies in the lab environment, so Kerr and Wright could be confident that if changes in the frequency of normal and forked phenotypes occurred, they would not be due to natural selection.

Using a larger breeding population would not be expected to alter the outcome of the experiment.

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1 year ago

What is the main thing plants compete for in poor soil

pashok25 [27]

Answer:

water

Explanation:

in poor soil most of the water would get sucked up into more powerful plants [larger plants]

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2 years ago

The number of horns in jackalopes follows the rules for incomplete dominance. alleles are h = 2 horns, h = 0 horns. if a jackalo

USPshnik [31]

Question is as interesting as the animal jackalope.

We ASSUME that incomplete dominance of the number of horns gives rise to 0,1 or 2 horns, where hh=>0, Hh=>1 ("blend" of 0 and 2), and HH=>2 horns.

So if HH crosses with hh, the genotype of the offspring will be Hh, i.e. phenotype Hh=> 1 horn

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2 years ago