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3 years ago

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

Biology

2 answers:

Stolb23 [73]3 years ago

11 0

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! :)

andrew-mc [135]3 years ago

6 0

Using a molecular<span>, scientists are able to estimate the amount of time that two species have been evolving independently.</span>lecular

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the genotype of the parent guinea pigs are as follows:

RrBb (rough, black) and Rrbb (rough, white)

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Since the phenotype of smooth coat is present in the offspring, the parent genotype cannot have RR alleles for their coat. Similarly, the rough, black parent cannot have BB alleles in its genotype because that will not yield a white coat color in its offspring.

After making the dihybdrid cross, the probability obtained for each phenotype is given below:

rough black: $\frac{3}{8}$

rough white: $\frac{3}{8}$

smooth black: $\frac{1}{8}$

smooth white: $\frac{1}{8}$

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