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tangare [24]
3 years ago
15

Which statement describes species B?

Biology
2 answers:
Nutka1998 [239]3 years ago
7 0

Explanation:

guesss b............

11Alexandr11 [23.1K]3 years ago
5 0

Answer:

Answers for the entire assignment for e2020! This will help future people in order to get a excellent grade! :)

Determine whether each statement below describes traditional or modern classification.

(Answers)

Traditional Classification is based on similar appearance

Modern Classification is based on evolutionary relationships

Modern Classification is known as Cladistics

Traditional Classification is known as Linnaean classification

Which piece of information provided the stimulus for the shift from traditional classification to modern classification?

Answer: An understanding that species share a common ancestor

Fill in the blank below with the vocabulary word that best completes the sentence.

Using a ______  clock, scientists are able to estimate the amount of time that two species have been evolving independently.

Answer: molecular

How does the molecular clock work?

Answer: It compares the number of mutations that exist in the DNA of two different species.

Select the correct word from the drop-down menu to complete the sentences.

______ are branching diagrams that depict the evolutionary relationship among species.

Answer: Cladograms

_____ is a point in a cladogram where a single ancestral lineage breaks into two or more descendant lineages.

_____ is a group of organisms that includes an ancestor and all of its descendants.

_____  is any named group of organisms, whether they form a clade or not.

Answer(s):

Node

Clade

Taxa

According to the cladogram, which of the following is the derived characteristic shared by amphibians and reptiles?

Answer: Lungs

After much research and DNA analysis it has been determined that species in the same clade are actually more distantly related than originally thought. What is one way that the cladogram may change because of this information?

Answer: A node would be introduced

According to the cladogram, which species are MOST closely related?

Answer: D and E

Use the cladogram about fish to answer the following questions.

Which of the following best describes the organism located at point B?

Answer: Has jaw, but no bones

The organism at location D is the  ______ to organisms at location A, B, and C.

Answer: Ancestor

According to the cladogram, arthropods are MOST closely related to which group of organisms?

Answer: annelids

You're welcome! :)

Explanation:

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Which type of selection tends to increase genetic variation? A. Disruptive selection B. Directional selection C. Stabilizing sel
aliina [53]

Answer:

Which type of selection tends to increase genetic variation? A. Disruptive selection B. Directional selection C. Stabilizing selection

The Answer is option A (Disruptive selection)

Explanation:

Selection can either shift the mean value of a trait, reduce the trait's variation, or increase its variation.

Genetic variation which allows natural selection to increase or decrease frequency of alleles already in the population is a source of phenotypic variation as it refers to differences in all the hereditary information of members of the same species.

Disruptive Selection is important in maintaining variation and initiating speciation as it Increases Variation by favoring alleles corresponding to more extreme phenotypes. But for it to occur, the mean phenotype has to experience the lowest fitness. Disruptive selection affects the frequency distributions of alleles and genotypes within a population.

Disruptive selection is based on the variance of a trait in a population as it increases genetic variance by equalizing the frequencies of existing alleles at polymorphic loci (a genetic loci with two or more alleles). Disruptive selection maintains and may even increase variation in natural populations by favoring extreme phenotypes, individuals with extreme values for a trait have greater reproductive success than individuals with intermediate values.

7 0
3 years ago
The cells in this part of a plant form long, vertical tubes. What is the most
Soloha48 [4]

Answer:

The cells present in the stem are part of the xylem and phloem conductive tissues. They are characterized by being elongated and in tubular form because they transport the substances, the xylem transports  water and  inorganic mineral sales that the root absorbs from the soil. The phloem is responsible for transporting substances synthesized in photosynthesis.

Its tubular and elongated shape facilitates the transport of these substances

7 0
3 years ago
Inadequate intake of which nutrient during the first few weeks of pregnancy is associated with spinal cord defects in the fetus?
Rus_ich [418]
Folate also known as folic acid
6 0
3 years ago
Describe how ATP is produced in the light reactions.
Lynna [10]

Answer:

Explanation:

Two reactions take place that produce raw materials for the dark stage:  

  1. Light energy splits the water molecules into <em>hydrogen</em> and <em>oxygen</em>
  2. This process is called <u>photolysis  </u>

The hydrogen is taken up by a hydrogen acceptor called Nicotinamide adenine dinucleotide phosphate (NADP) while oxygen is released as a by-product  .

2 H₂O(l) --------->light energy -------> 4 H + O₂ (photolysis

)

Light energy strikes the chlorophyll molecules and sets in motion a series of reactions resulting in the production of a high energy molecule called <em>Adenosine Triphosphate</em> (ATP)

Hope this helps.

5 0
3 years ago
Why are people concerned about the sustainability of fossil fuels?
Reptile [31]

Answer:

How about you tell what ur answers and ill see if there wrong and help u with them ..?

is that okay?

we all have our own school work to do so ill try and help just give me ur answers :)

Explanation:

4 0
3 years ago
Read 2 more answers
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