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qwelly [4]
3 years ago
6

Characteristics between the branch points of a cladogram that are shared by all organisms above the branch point and are not pre

sent in any below it are called:_______.
a. homoplastic characters.
b. ancestral characters.
c. homologous characters.
d. novel characters.
e. derived characters.
Biology
1 answer:
4vir4ik [10]3 years ago
3 0

Answer:

e. derived characters

Explanation:

Any characteristic change which is transfer to the new species from ancestors but is different from the original character. It will be called as derived character.

But if the same character is transfer from ancestor to the new species this will called as ancestral character.

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Coach can first recognize heat stroke by increased in body temperature brought on by intense physical activity in hot weather. Exertional heat stroke is a medical emergency; the emergency medical service should be called for and while waiting for them, affected person should be moved into a cool place and all outer clothing materials should be removed from his body.
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3 years ago
On the Galápagos Islands, the finches that Darwin studied tended to have either small beaks or large beaks. The smaller beaks ar
Tasya [4]

Answer:

The correct answer is option C. "disruptive selection".

Explanation:

Disruptive selection is a type of natural selection at which extreme values for a trait are favored, while intermediate traits are more likely to disappear. In this example the finches tended to have either small beaks or large beaks because small beaks are best at eating soft seeds and large beaks are best at cracking seeds. This is an example of disruptive selection because the two extreme values for the size of beaks are favored.

4 0
3 years ago
Analyze DNA is isolated from a hair found in a knit hat that was recovered from the scene of a bank robbery. DNA fingerprints ar
zepelin [54]

The DNA of the samples is isolated, and then the mapping is carried out, which is done by equipment called "DNA Sequencers". With this, it is possible to compare the genomes and conclude to whom the hair belongs.

<h3>DNA in the hair?</h3>

In the case of hair, researchers can rely on these two types of DNA (nuclear and mitochondrial). However, according to the Easy-DNA Laboratory, a hair that is cut, unfortunately, does not contain any valid DNA nucleus. However, when the hair still contains the hair bulb (hair root) it is possible to extract the nuclear DNA, because in that region we have thousands of hair forming cells (keratinocytes).

With this information, we can conclude that the DNA can be analyzed and compared, arriving at who committed the bank robbery.

Learn more about DNA in brainly.com/question/264225

4 0
3 years ago
Mitochondria are thought to be the descendants of certain alpha-proteobacteria. They are, however, no longer able to lead indepe
galben [10]

Answer:

E) horizontal gene transfer

Explanation:

Horizontal gene transfer(HGT) is mainly seen in bacteria. Bacteria exchange their genetic material from the horizontal gene transfer method. There are three methods in HGT- conjugation, transduction, and transformation.

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Therefore in bacteria and nucleus, the genetic material exchange can occur only through HGT.

5 0
3 years ago
A zonkey comes from a zebra(46 diploid chromosomes) and a donkey (62 diploid chromosomes).
MAVERICK [17]
Q1. The answer is 53 chromosomes

Zebra has 44 diploid chromosomes (2n = 44). Zebra's gametes are haploid, so they will have 22 chromosomes (n = 22).
Donkey has 62 diploid chromosomes (2n = 62). Zebra's gametes are haploid, so they will have 31 chromosomes (n = 31).
After fusion of zebra's gamete (n = 22) and donkey's gamete (n = 31), the zonkey's zygote will have 22 + 31 = 53 chromosomes


Q2 and Q3. In the meiosis, the number of chromosomes is reduced by half. Since zonkey has 53 chromosomes, after meiosis it should have 53/2 chromosomes, which is not the whole number. This is the reason why they cannot produce normal gametes that will result, after the fusion, in the production of normal diploid zygote
5 0
3 years ago
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