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erma4kov [3.2K]
3 years ago
13

One of the original Amish colonies rose from a ship of colonists that came from Europe. The ship’s captain, who had polydactyl

y, a rare dominant trait, was one of the original colonists. Today, we see a much higher frequency of polydactyly in the Amish population. This is an example of:
natural selection
genetic drift
founder effect
b and c
Biology
1 answer:
ANTONII [103]3 years ago
6 0

Answer:

B and C

Explanation:

When the Amish came to their new home, they were founding a new colony. This is considered a founding effect.

Now, there is another thing to keep in mind, and that is that the Amish are very strict about their custom, for example, the idea of family and identity. This led them to form couples, only among the members who belonged to the community.

As generations go by, genealogical relationships between individuals in the population become closer. This causes some genes, by mere probability, to become fixed (i.e. they are the only ones left in the population). As a consequence of this, the frequency of rare genes increases (polydactyly). This evolutionary process is known as gene drift.

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What role does mutation play in the evolution of an organism?
Andrew [12]

Answer:

Mutation plays an important role in evolution. The ultimate source of all genetic variation is mutation. Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.

5 0
3 years ago
Which statement by a staff nurse on the orthopedic floor indicates the need for further staff education?
Vladimir79 [104]

Answer:

The options showing the different given statements were not provided in this question; however, an orthopaedic nurse receives specialized education and training to care for patients with diseases and disorders of the musculoskeletal system. Therefore, an orthopedic staff nurse is required to have a knowledge of the following:

1. Orthopedic cases and surgical treatments for each.

2. Surgical site care and dressing.

3. Pain management.

4. Intravenous and Intramuscular drug administration.

5. Vital signs check and significant changes.

6. Post-op care of patient.

7. Casting

8. External fixation care

9. Neurovascular status monitoring

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3 0
3 years ago
All of the following are effector responses that increase body temperature, EXCEPT A : vasodilation of dermal blood vessels B :
Ainat [17]

Answer: Option A

Explanation:

The effector response that increases the body is not associated with vasodilation of dermal blood vessels.

The skins's immense blood supply helps in temperature regulation of the body. The dilated blood vessels helps in heat loss and lowers the body temperature.

Unlike, them the vasoconstriction retains heat and increases the body temperature.

So, the correct answer is option A

7 0
3 years ago
Read 2 more answers
Alcohol interacts with more types of receptors, neurotransmitters, and genes than do marijuana and cocaine.
charle [14.2K]
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7 0
3 years ago
In the food chain of "algae-------&gt; mosquito larvae --------&gt; frogs -------&gt; racoons," algae are the Consumers Heterotr
kykrilka [37]

Answer:

Autotrophs

Explanation:

Food chain is a step by step feeding process in an ecosystem where an organism producer is been feed on by another organism that depends on it

called consumer and it is also feed on by predator. Producer usually produce their food its includes plants, Algae, phytoplankton.

The energy level moved from the producer to the last organism on the chain.

Autotrophs are the same as producer and an Algae food chain is an example of aquatic food chain where algae serves as primary source of energy(Producer) and its been feed upon by mosquito larvea and larvea by frogs and frogs are eaten by racoon.

5 0
3 years ago
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