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rosijanka [135]
3 years ago
10

compare circulatory systems of the earthworm, frog, and squid. Include information on major organs and vessels, blood transfer p

rocess, how the systems are similar, and how the systems differ. Explain the differences in terms of structure and environment.
Biology
1 answer:
aliina [53]3 years ago
3 0

Answer:The frog and squid have similar structure while the earthworm differs

Explanation:

The earthworm has two ventricles while the latter have one ventricle each

Earthworm can't survive in water but the others can survive on land and in water

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How many rounds of replication does it take for an incorporation error to be established as a base pair change?
iris [78.8K]

Answer:

Just one round without DNA repair

Explanation:

When an error occurs before or during replication, in a normal system, there is always proofreading and correction. If the error is not corrected during replication, it can then be corrected by the DNA damage repair system. But if not also corrected, the error becomes fixed and subsequent replication will produce this error

6 0
3 years ago
__________ is a discredited pseudo-scientific theory of the brain that claimed that personality characteristics could be determi
miv72 [106K]
The answer in this question is Phrenology. Phrenology is classified as the discredited pseudoscientific theory of the brain that claimed that moral character, personality characteristics and intelligence could be determined by examining the bumps on a person's skull. Phrenology is focused on the measurements of the human skull which is based on the concept of the brain is the organ of the mind.
8 0
4 years ago
In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant
slega [8]

Answer:

1:1:1:1 walnut comb

Explanation:

If a cross is made between a female who is RRpp (rose comb) and a male who is rrPP (pea comb)  then:

P: RRpp  x  rrPP

F1: RrPp RrPp RrPp RrPp

This means that all of the offspring in F1 generation will have heterozygous genotype (at both loci). Since it contains both dominant alleles, the phenotype is walnut comb.

4 0
3 years ago
Technology can have good and bad effects. What is a bad effect of spraying pesticides on crops with the use of airplanes?
Anastaziya [24]

The correct answer is option a, that is, It is sometimes sprayed too far from the crops.

The use of pesticides on crops may exhibit a significant threat to the environment, mainly in and nearby to water sources with sensitive ecosystems, sources area, public drinking water, residential areas, and recreational waters.  

Aircraft spray of pesticides takes place from a greater altitude than the ground-based equipment and on a major scale, both of these elements may enhance the threat of spray drift.  


6 0
3 years ago
Read 2 more answers
According to reports by National Public Radio, sales of products labeled Non-GMO have more than doubled over the past two years,
lukranit [14]

Genetically modified organisms are those organisms in which certain gene is inserted to get the desired beneficial results.

Explanation:

A genetically modified organism is an organism or plant altered for beneficial traits which would not have been possible by the traditional mating process or recombination techniques.

Genetic engineering is the technique involved for the construction of gene of interest and inserting them in the host species for getting expressed.

Many fruitful results have come out like a tomato of long shelf life k/a flavr savr.

Apart from molecular techniques used for cloning, CRISPR is the recent innovation which had made it very simple.

The GMOs can solve the food problem of the world as Single-cell proteins and longer shelved life food.

Disease resistant plants can be formed for better yields.

Nutrition level of food can be increased.

Example of GMO are canola, corn, papaya, soy and many animals are also on the list.

5 0
3 years ago
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