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fiasKO [112]
3 years ago
6

A student observes a worm-like organism crawling about on dead organic matter. later, the organism sheds its outer covering. one

possibility is that the organism is a larval insect (like a maggot). on the other hand, it might be a member of which phylum, and one way to distinguish between the two possibilities is by looking for the presence of
Biology
1 answer:
mariarad [96]3 years ago
4 0
Nematode and a circulatory system.
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When corn plants are too tall, they lodge (topple over) prior to harvest. This is bad since the grain is often lost when it cann
Shalnov [3]

Answer:

The phenotypic variance= 2113

The eenvironmenal variance= 644

The genetic variance= 1469

The broad-sense heritability = 0.695

Explanation:

To determine the phenotypic variance, we need to know the calculate the environmental variance and the genetic variance first;

because Phenotypic variance = V(p) such that;

V(p) = V(e) + V(g)                  

where V(e)  =  environmental variance and V(g)   =  genetic variance

Therefore, Environmental variance can be defined as a portion of phenotypic variance due to differences in the environments to which the individuals in a population have been exposed. The total amount of variance observed is dependent on the genetic component, determined by the variation that is inherited.

This implies that V(e)= initial variance which was there in the parents ( i.e  Variance of inbred line 1 = 311  and Variance of inbred line 2 = 333 )

V(e) = (311 + 333) = 644

Genetic Variance simply refer to the variance that occurs or preferrably , that is observed after inbreeding (i.e Variance of F1 = 316  and Variance of F2 = 1153)

V(g)  = (316 + 1153) = 1469

Now, back to phenotypic variance = V(e) + V(g)

substituting the parameters we have;  1469 + 644 = 2113

Broad-sense heritability can be calculated as the ratio of total genetic variance to total phenotypic variance.

= V(g)/ V(p)

= 1469/ 2113

= 0.695

4 0
2 years ago
How can some organisms survive as single cells when other organisms require many cells?
irakobra [83]

Well, different organisms require different things. A single celled bacteria does not need a lot at all compared to a plant or animal. One cell can support a bacrerium. An animal needs many cells to carry out the functions necessary for it to live.

Happy to help! Please mark me the Brainliest!

6 0
3 years ago
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Inga [223]
Upright silo is not a feeding d evice
 
4 0
3 years ago
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Both parents are carriers of the allele for Albinism, or lack of the pigment melanin in skin or eyes. The equal probability of h
erma4kov [3.2K]

Answer:the condition is recessive, since the probability of appearing is 1/4.

Explanation:

Based on the information above,most of the children are dark skinned showing the dark skinned pigmentation being more dominant,thus the allele for albinism is recessive.

7 0
2 years ago
The first stage of alzheimer disease is characterized by:
dmitriy555 [2]

In the first stages of Alzheimer’s disease, the patient affected may experience symptoms, such as memory loss of certain events. As the time passes, the patient may experience long-term memory loses, the patient may also revert into being a child. Patients who has been diagnose with Alzheimer’s Disease are commonly diagnosis with pneumonia, which may lead to their death. 

3 0
3 years ago
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