The Amish populations in the United States began with relatively few individuals and have not recruited many newcomers to the population. Today, these Amish populations exhibit a much higher incidence of polydactyly (possessing extra digits) than other American populations. Which mechanism of evolution is likely responsible for this phenomenon

Answers

Answer 1

Answer: The founder effect

Explanation: The high incidence of polydactyl prevalent among the Amish population could be attributed to the a case of genetic drift called the founder effect. The founder effect occurs when a small population consisting of few people separate from a much large population, just like the Amish population separating from the larger American community. Due to the few composition or small size of the population, the genetic impact or influence on members of the population is usually higher than the effect on the larger population and leading to more rapid spread. The relatively small individuals which make up the Amish population compared to the larger American community is the reason why polydactyl hmis prevent within them and since theere are no newcomers, the trend will likely continue.


Related Questions

ANSWER ASAP PLEASEEEEEE!!!!!! ILL GIVE 100 POINTS!!

Answers

Answer:

A

Explanation:

Answer:

The answer is A both daughter cells will have identical genetic material to the parent cell.

Explanation:

plz give brainliest

Which organelle is the primary site of protein production? A) nucleus B) ribosomes C) cytoplasm C) cell membrane

Answers

Answer: b

Explanation:

Just trust

Answer:

B, ribosomes :)))))

Explanation:

An organism is _______ for a gene if it has two copies of the same allele for the gene.
The genotype of an organism and the interaction of the genotype with the environment determine the organism’s _______, or observable characteristics.
The law of independent assortment states that the separation of alleles for one gene are independent of that of other genes, unless the genes are _______.
Mendel’s law of _______ governs which allele is expressed in an individual.
Respond to the following based on your reading.

In the previous section, you learned that the allele for brown eyes (B) is dominant, and blue (b) and green eyes (g) are recessive, while green eyes are dominant over blue eyes. What eye color would someone with the following genotypes exhibit? (a) BB, (b) Bb, (c) gb, (d) Bg, (e) bb.
Discuss the law of segregation and explain why each organism has two copies of the gene for each trait expressed.
What type of experiments did Mendel conduct, and what did he want to find out about the heritability of the seven traits he chose to study?

Answers

Answer:

1. Purebred (N.B: the exact word is considered a foul word)

2. Phenotype

3. Linked

4. Segregation

5) (a) BB- Brown eyes

(b) Bb- brown eyes

(c) gb- green eyes

(d) Bg- brown eyes

(e) bb- blue eyes

The other questions are explained below

Explanation:

1. A purebred organism is that which possess two copies of the same alleles in its genotype. An allele is a contrasting form of a gene. If the two alleles are the same, the organism is said to be purebred.

2. Phenotype of an organism is the observable characteristics of the organism. It is determined by the organism's genotype in interaction with its environment.

3. Mendel's law of independent assortment states that the alleles of a gene will separate into gametes independently of another gene unless the genes are linked. Linked genes are genes that are too close to each other on a chromosome and hence, do not sort independently. They're rather inherited together.

4. Mendel’s law of Segregation governs which allele is expressed in an individual. According to this law, an organism will express the allele it randomly receives from each parent. If an organism receives two different alleles, it will express the allele that is dominant. In other words, an organism will only express the recessive trait if it receives two recessive alleles from both parents.

5. a) BB- Brown eyes because the organism is purebred for the dominant (brown) allele

(b) Bb- brown eyes because the brown allele (B) will mask the expression of blue allele (b) and express itself.

(c) gb- green eyes because the allele for green eyes (g) is dominant over the allele for blue eyes.

(d) Bg- brown eyes because the brown allele (B) is dominant over the allele for green eyes (g), hence, it will mask its expression

(e) bb- blue eyes because the organism is purebred for the blue allele i.e. same recessive (blue) alleles in the gene.

6. The law of segregation as proposed by Mendel states that the alleles of a gene will separate into gametes during gamete formation (meiosis). This is done in such a way that each gamete contains only one allele of each gene. Hence, an organisms will contain two copies of a gene because they receive each copy (allele) from each parent during fusion of their gametes.

7. Mendel conducted an hybridization experiment i.e. a cross involving two individuals that possess different traits. He did this in order to find out how different traits/characteristics in organisms were transferred from one generation to another. Mendel chose the pea plant for his experiment because they could easily be manipulated for self and cross pollination. Mendel studied seven (7) different traits or characteristics in pea plants including height, seed shape, seed color, flower color etc.

what is the si unit of energy​

Answers

Answer:

Joule

Explanation:

Answer:

- the Joule (J)

Explanation: The Si unit of energy is the same as the unit of work. In slightly more fundamental terms, 1 joule is equal to 1 newton metre and, in terms of SI base units.

All of the following statements about NAD are true except: Group of answer choices NAD is reduced to NADH during both glycolysis and the Krebs cycle. NAD has more chemical energy than NADH. NAD is reduced by the action of enzymes. NAD can receive electrons for use in chemiosmosis. NAD can be recycled many times.

Answers

Answer:

"NAD has more chemical energy than NADH" is the FALSE statement.

Explanation:

It is totally true that NAD can be recycled many times, it can actually receive electrons for use in chemiosmosis and is reduced by the action of enzymed. During both glycolysis and the Krebs cycle. All these statements are true. But when it comes to NAD and NADH, it is false that NAD has more chemical energy than NADH. There is actually more energy in one NADH, that can lose electrons to transfer energy.

Which type of volcanic mountain has wide, gentle slopes?

Answers

Answer:

Shield volcanoes

Explanation:

Answer:

Shield volcanoes

Explanation:

Shield volcanoes erupt thin, 'runny', lava that forms a gently sloping structure. Where a volcano produces low viscosity, runny, lava it spreads far from the source forming a volcano with gentle slopes. This type is called a shield volcano. Mauna Kea and Mauna Loa are shield volcanoes.

Which of the only four available pints of blood (A+, AB–, B–, and O+) should the patient receive for a transfusion?

1. B-

2. AB-

3. A+

4. O+

Answers

O+ i hope this helps!!!!!!!!!!!!!!

¿Cuántos y cuáles son los huesos del cráneo?

Answers

Answer:

yes

Explanation:

What do we call the likelihood that in event will occur

Answers

Answer:

It's Called Probability.

Explanation:

Which best compares radiation and conduction?

Both transfer thermal energy from warm objects to cooler objects.
Both can transfer energy through empty space.
Both transfer thermal energy by electromagnetic waves.
Both involve the transfer of energy through direct contact.

Answers

Answer:

Both transfer thermal energy from warm objects to cooler objects.

Explanation:

Radiation involves the transfer of energy in the form of light, heat and electromagnetic waves such as x-rays while conduction involves the transfer of energy through direct contact of the two substances. The both of them involve involve the transfer of thermal energy from hotter objects to colder objects.

Radiation is involved in the transfer of energy through empty spaces while conduction involves transfer of energy through direct contact.

The statement which best compares radiation and conduction is both transfer thermal energy from warm objects to cooler objects.

To answer the question, we need to know what heat transfer is

What is heat transfer?

This is the transfer of thermal energy from one body to the other.

Types of heat transfer

There are 3 types of heat transfer namely

Conduction - This is the transfer of thermal energy from warms objects to cooler objects through direct contact. This usually occurs in solids.

Convection - This is transfer of thermal energy from warmer objects to cooler objects by movement of the whole object. This usually occurs in fluids.

Radiation - This is transfer of thermal energy from warm objects to cools objects through empty space by electromagnetic waves.

So, the similarity between conduction and radiation is that both transfer thermal energy from warm objects to cooler objects.

So, the statement which best compares radiation and conduction is both transfer thermal energy from warm objects to cooler objects.

Learn more about thermal energy here:

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explain what is meant by a ' reactant ' .​

Answers

Explanation:

A substance that enters into and is altered in the course of a chemical reaction.

hope are you understand

A thing that enter and goes out

describe environment and its causes

Answers

Answer:

The definition including its particular circumstance is outlined in the subsection below on clarification.

Explanation:

The environment seems to be the reason why things like waterlogged as well as the warm environment are dissimilar. It can sometimes be aspects that are alive or nonalive.

Some causes related to the given topic are as follows:

This comprises all the usual physical, biological, and perhaps other causes.They deal with that as well constantly and therefore are adjusting to just the circumstances in their world.

why aphids are mostly found in the daytime ?​

Answers

Answer:

When daytime high temperatures are between 90 degrees Fahrenheit

Please choose the answer that best fills in the blanks of this statement in the correct order. Photosynthesis proceeds in two phases: the light-_______ reactions which proceed only in the presence of sunlight, and the light-________ reactions which proceed regardless of the lighting conditions.

Answers

Answer:

first blank dependent

second blank independent

Explanation:

Light Dependent reactions depend on light and right independent reactions don't

what are the problems and the challenges in classifying living things​

Answers

Answer:

below

Explanation:

there are so many different kinds of living things that its so difficult to classify them as there would be too many classifications that it would become absurd to have only a few organsims in a single group. the role of classification is to organize as well as simplify so it proves to be a challenge when the subgroups branching from eukoryotes vs prokaryotes become too small and therefore it becomes a giant mess.  even the current classification system (taxonomy) is flawed.

The problems/challenges associated with classifying living things is : The challenge of having a very small number of living thing classified into a subgroup and having an enormous amount of subgroups.

Although the main reason of classification of organism is to organize/categorize every living thing into a suitable group as well as simplify the subgroups( this leads to having a lot of subgroups ). there is also a challenge whereby the subgroups become so small when trying to categorize every organisms following all the rules of taxonomy. while

Taxonomy is the science of classifying living things into different groups and subgroups following certain similar characteristics exhibited by the organism.

An example is : The subgroups of eukaryotes vs prokaryotes becoming  too small. because the rules of Taxonomy been followed.

hence the challenges are: very small number of living thing classified into a subgroup and having an enormous amount of subgroups.

learn more : https://brainly.com/question/1845332


State one reason why soil organisms need air

Answers

Answer:

Soil organisms need air because to release plants nutrition to soil .

they provide nutrients into the air that are healthy

Why does the DNA that makes up the chromosomes need to replicate before the start of meiosis?

Answers

Explanation:

DNA replication needs to occur because existing cells divide to produce new cells. ... So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!

It ensures that each daughter cell has the correct number of chromosomes.
DNA replication needs to occur because existing cells divide to produce new cells.

Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata

Answers

Answer:

the correct answer is option ( A ) pons

Explanation:

hope it helps you

Mark my answer as brainlist

have a nice day

Answer:

A. Pons

Explanation:

I got it right on my quiz :)

11. Sensory receptors throughout the body monitor stimuli and communicate with the central nervous system to allow you to respc
in your environment or internal conditions. What component of feedback loops do sensory receptors fulfill?
O A. Controller
B. Hormones
C. Sensor
D. Effector

Answers

Answer:hormones

Explanation:

Answer:

C. Sensor

Explanation:

  According to https://open.oregonstate.education/aandp/chapter/13-1-sensory-receptors/

   -   "A major role of sensory receptors is to help us learn about the environment around us, or about the state of our internal environment. Different types of stimuli from varying sources are received and changed into the electrochemical signals of the nervous system. This process is called sensory transduction."

Hope this Helps :)


You need to include more of which nutrient in your diet as compared to your
grandmother and why ?

Answers

Calcium and Vitamin D. Adults older than 70 need more calcium and vitamin D to help maintain bone health than they did in their younger years. ...

what is mean by combution ​

Answers

Answer: Burning

Combustion is the scientific word for burning.

Research has proven that ;

During combustion(burning)  a substance reacts with oxygen from the air and these  reactions happen at high temperatures, and transfer energy to the surroundings as light and heat.

This is why you see flames when things burn.

Explanation:

what is biology definition in details

Answers

Answer:

Biology :

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the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.

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#Be Brainly

Answer:

The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.

Hope this helps! :D

Cells that secrete a lot of substances via active transport need a lot of ___in their cytoplasm.
А)endoplasmic reticulum
B)mitochondria
С)golgi apparatus
D)lysosomes
E)chromosomes

Answers

Answer:

The correct answer is

Explanation:

Lysosomes are used in transportation of cytoplasm.

Hope this helps....

Have a nice day!!!!

What kind of frog\toad is this?
Giving brainliest to the first one who knows

Answers

Answer:

I'm having trouble seeing the picture

Answer:

it looks like an american toad or wood frog

hey guys
Pls answer ⤵️
write short note on IVF ​

Answers

Answer:

In vitro fertilization (IVF) is a type of assistive reproductive technology (ART). It involves retrieving eggs from a woman's ovaries and fertilizing them with sperm. This fertilized egg is known as an embryo. The embryo can then be frozen for storage or transferred to a woman's uterus.

Answer:

IVF YOU MEAN 4 F?????????

define atomic number in your own words​

Answers

atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.

name at least three other neurotransmitters and state the roles of theese neurotransmitters in human body.​

Answers

Answer:

Glutamate (Glu) Acetylcholine (ACh) Histamine Dopamine (DA). (Glu) is an important neurotransmitter, (ACh) is the chief neurotransmitter of the parasympathetic nervous system, (DA) regulates sleep patterns, and influencing cognition.

Explanation:

All enzymes which catalyze the chemical reactions of a cell are
a. carbohydrates b. lipids c. long-chain fatty acids d. proteins e. ribonucleic acids no another by differences in​

Answers

Answer:

I think the answer will be protein.

Answer:

the answer is carbohydrates

state three effects of
crop disease​

Answers

Answer:

Reduce yeild

Effects the production quality

Cost of productions increased

Explanation:

What is a macromolecule? Question 6 options: a) a molecule that contains carbon b) a very large molecule c) a molecule that has two hydrogen atoms and one oxygen atom d) a molecule you can see with the naked eye

Answers

Answer:

b)a very large molecule

Explanation:

A macromolecule is a very large molecule, such as a protein. They are composed of thousands of covalently bonded atoms. Many macromolecules are polymers of smaller molecules called monomers. The most common macromolecules in biochemistry are biopolymers and large non-polymeric molecules such as lipids and macrocycles. 

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