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arlik [135]
3 years ago
10

Using the phylogenetic tree, indicate whether the following statements are true or false a. If all species depicted here make up

a taxon, this taxon is paraphyletic. b. The last common ancestor of species B and C occurred more recently than the last common ancestor of species D and E c. Species A is the direct ancestor of both species B and species C. d. If all species depicted here make up a taxon, this taxon is monophyletic. e. The species present at position 4 is ancestral to both species D and E f. Species C is more closely related to species B than D is to B g. The species present at position 3 is ancestral to C, D, and E. Present B 10 MYA Genetic Relatedness

Biology
1 answer:
natima [27]3 years ago
7 0

Missing Part of Question:

The diagram was missing in this question which I have attached in the answer for referencing.

Answer with Explanation:

a) False. The Taxon is monophyletic as for a taxon to be paraphyletic it must not include all descendants.

b) True. The common ancestor of B and C occurred at branch point 2 whereas the common ancestor for D and E is at branch point 4. From diagram it is clear that 2 is a descendant of 4, therefore 2 occurs before 4.

c) False. As species A comes after branch point 3, it is not the direct ancestor of B and C.

d) True. This is a monophyletic Taxon as it includes all descendants that comes from a single ancestor (from branch point 4).

e) True. Species at position 4 is connected to both D and E and hence, it is their ancestor.

f) False. Both species C and D existed after branch point 2 and thus, are equal in terms of genetic relatedness.

g) False. The species at position 3 is only ancestral to C and D, but not to E as it is a descendant of species at position 4.

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Some butterflies can ingest toxic chemicals from the milkweed plants they feed on and then canstore those chemicals in their bod
Norma-Jean [14]

Answer:

A) Any butterfly allele that allowed milkweed toxin storage would be likely to persist because butterflies that had it were more likely to survive.

Explanation:

Butterflies are natural preys to birds. Over time, some butterflies evolved adaptive strategy such as developing an allele which enables storage of toxin from milkweed as a form of defense mechanism. This stored toxins repel birds from eating the butterflies having this allele giving rise to the survival of these butterflies overtime. Butterflies that had it are likely to be highly favored for survival against predatory birds, while those butterflies without this allele are likely to be heavily preyed upon by birds.

6 0
3 years ago
Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (y). What is the expected p
asambeis [7]

Answer:

The correct answer would be- 1:1:1:1.

Explanation:

According to the question the cross between the two pea plants with the genotype RrYy and rryy where R for round seeds and r for recessive form that expressed wrinkled seed character. The other character of this dihybrid cross is the color of the seds Y for green and y for yellow seeds.

The cross is shown in the image attached that suggests that phenotypic ratio would be 1:1:1:1 as RrYy, Rryy, rrYy, and rryy.

Thus, the correct answer is : 1:1:1:1.

3 0
3 years ago
How many types of rocks can form from the rock cycle?
blsea [12.9K]
There are three main types of rocks: sedimentary, igneous, and metamorphic that form the rock cycle. Hope this helps :)
8 0
2 years ago
Read 2 more answers
Darwin theorzed that evidence for the evoiution of new species can be found in the fossill record. Which observation supports th
VashaNatasha [74]

The gradual evolution for the family Equidae (horse family) has been well documented within the fossil record.

3 0
3 years ago
Wats da answer bc I’m confused
trapecia [35]

Answer:

A. Cell

B. Organ

C. Tissue

Explanation:

cell: The smallest unit of life capable of independent reproduction. Generally contains nucleic acid, cytoplasm, a cell membrane, and many other proteins and structures.

organ: A structure made of different tissues that work together to perform physiological functions.

Tissues: A group of similar cells with the same origin that work together to perform the same function.

3 0
2 years ago
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