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ankoles [38]
3 years ago
7

Mendel did experiments in which he kept track of the inheritance of seed texture (wrinkled or smooth). First he created true-bre

eding lines: Parents with smooth seeds produced offspring with smooth seeds, and parents with wrinkled seeds produced offspring with wrinkled seeds. Then when he crossed wrinkled and smooth peas from these true-breeding lines, all of the offspring were smooth. Which trait was dominant
Biology
1 answer:
sveticcg [70]3 years ago
8 0

Answer:

smooth was dominant over that for wrinkled

Explanation:

In complete dominance, a gene may have two different variants or 'alleles', dominant and recessive. A dominant allele is a gene variant that is able to produce a certain phenotype, even in the presence of other alleles, while a recessive allele is a gene variant that is masked by the dominant allele in heterozygous individuals (i.e., individuals that inherited different alleles from each parent). By crossing smooth and wrinkled pea plants, Mendel observed the offspring (F1) were smooth rather than mixed, indicating one type of seed texture was dominant over the other. Subsequently, Mendel observed that alleles for different traits (e.g., seed texture and seed color) assorted independently during meiosis.

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The elephants represented in lanes 3 and 5 could have been a match to the ivory sample if you failed to amplify one allele in ei
olga_2 [115]

About the question:

I failed to find the result of the PCR / electrophoresis. However, I will try to explain when to still consider a sample, and when to exclude it.

Answer:

Probably elephants 1, 2, 4, and 6 exposed a pattern of lines that differed in most alleles from the ivory´s pattern. So they were considered to be different and, hence, excluded. However, elephants 3 and 5 only were different in one allele, which might be due to the amplification failure. In these last situations, the experiment must be run again, and include many markers.

Explanation:

The genetic profile is the series of alleles, characteristic of each individual, concerning a series of DNA fragments.

Once genetic profiles are obtained by using PCR/electrophoresis, they must be subjected to interpretation. The researcher must compare profiles to find concordance between individuals or the lack of it.

In the exposed example, probably we have a profile of the ivory sample, and we need to find out to what individual or population it belongs to. So we need to compare the pattern of bands of the different lanes with the ivory´s pattern of bands.

In resumed terms, if the ivory´s patterns completely match with another lane pattern, then this is the individuals or population to whom it belongs the ivory. However, if they do not match, we need to exclude this individual.

But this is not as easy as it looks like. Sometimes it is difficult to interpret the results because bands are not so clear, and sometimes there are failures during amplification, as said before in the statement of the problem.

In these situations, what you need to do is look for the lanes that match the most with the ivory one and discard those that differ the most. These last patterns probably belong to a different animal or population, that why they can be excluded. Individuals suspected of being the same as the individual understudy or belonging to the same population, must be subducted to a repetition of the study. Also, the use of several markers in the study increases the matches chances.

So, in the exposed example, if the amplification fails in one allele, elephants 3 and 5 could be a match to the ivory sample, probably because all the other alleles do match. You can only exclude them if, after the experiment repetition, the involved allele is still different. On the other hand, you can eliminate the elephants 1, 2, 4, and 6 because their pattern bands are significantly different from the ivory´s patterns, so you do not even need to repeat the experiment.

7 0
2 years ago
During Fermentation, ________ (1 point)
blondinia [14]
Oh yeah, I know that question, this is an EASY science question. It would be A because fermentation<span> is a process that converts sugar to gases, or alcohol. Also, fermentation this process occurs in yeast or the common bread.

Hope that helps and I hope to see you again real soon ;)</span>
4 0
3 years ago
For those that have pets preferably outdoor cats !! What is the best tracker to get for them ? Air tag? Zeerkeepr gps tracker ?
pantera1 [17]

Answer:

Tractive GPS Collar.

Explanation:

It is one of the best I have used, and it includes many useful features.

3 0
2 years ago
What types of tissue make up the layers of the skin?
kati45 [8]
Epidermis, dermis, and hypodermis
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Briefly summarize the steps of the six natural cycles of Earth.
Anastaziya [24]
Rock cycle- the prices in which rocks undergo in the earths crust, involving igneous instruction, uplift, erosion, transportation, deposits as sedimentary rock.

Tectonic cycle- the movement of large portions of earths crust (plates) the driving forces that move these plates are a combination of events that occurs within the earth.

Water cycle- the path of all water followers as it moves around earth in different states, water vapor, ice, water...

Carbon cycle- series of processes by which carbon compounds are inverted in the environment involving the incorporation of carbon dioxide into living tissue by photosynthesis.

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