Why is it that dominant diseases are not as common as recessive ones?

Answers

Answer 1

Answer:

Mainly because if a disorder is dominant, then it will be manifested by all who have the gene. If the disorder is severe, then it will reduce the chances of the individual surviving to grow up and reproduce (unless the disorder only manifests symptoms in later life). If they do reproduce, then 50% of their offspring will inherit the gene, and be at a similar disadvantage in reproduction. Thus, there is likely to be selection against the gene. By contrast, a recessive disorder is only manifested if both parents pass on the abnormal gene, and an individual with one gene for the disorder is usually at no disadvantage. Thus, there is much less selection against abnormal recessive disorders.


Related Questions

Deana applies the data in the table to calculate the rate of population increase or decrease of each country. Which assumption is necessary for Deana’s calculations to be accurate?

Answers

It should be noted that population is simply used for the determination of the economic activity of an area or country.

Your information is incomplete. Therefore, an overview of population will be given. Population simply means the inhabitants of a particular place or the number of organisms living in an area.

The increase or decrease in the rate of population is calculated by the formula:

= (New population - Old population) / Old population × 100

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Guys how to make my hair tall and healthy

Answers

i dont have an answer, just wanted to add if anyone knows how to take care of super curly, untamable hair plz comment and give me some tips. i got chemo curls and they keep getting wilder each day. (yeah im ok, if you're wondering)
Ask your doctors for supplements about your hair. Buy growth oil supplements. Don’t towel dry. Use the right brush. Coconut oil is another great way to make your hair smooth and healthy.

You are working with a population of snails. During the mating season, you observe that individuals in the population will only mate with others of the same genotype. For example, Mm individuals will only mate with Mm individuals, and mm individuals will only mate with other mm individuals. There are only two alleles for this gene (M is dominant; m is recessive). You have determined that the frequency of the M allele is 0.5. After one generation, what is the expected genotype frequency for Mm individuals in this population

Answers

If matings are not random in a population and individuals mate with other individuals of similar genotype/phenotype, h0m0zyg0us frequencies increase. In this example, the genotype frequency for Mm is F(Mm) = 0.25.

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In the exposed example, one of the assumptions of Hardy-Weinberg equilibrium is not accomplished. There are non random matings.

Individuals mate with other snails of the same genotypes

MM  x  MM

Mm  x  Mm

mm  x  mm

We can assume this is an example of matings by similar phenotypes.

Eventually, this mating system leads to an increase in the h0m0zyg0us genotype frequency, at the expense of heter0zyg0us ones in loci that determine the trait.

Allelic frequencies do not change. Only genotypic frequencies do.

This mating system tends to separate the population into two subgroups, decreasing the amount of heter0zyg0us individuals.

          Matings              Progeny                              

MM  x  MM         4/4 MMMM  x  Mm         1/4  MM + 2/4 Mm + 1/4 mmmm  x  mm         4/4 mm

Zygotic population of the next generation

F(MM) = 4/4 MM + 1/4 MmF(Mm) = 1/2 MmF(mm) = 4/4 mm + 1/4 Mm

So, in the exposed example we know that the frequency of the dominant allele M is 0.5

f(M) = p = 0.5

knowing that p + q = 1, we can clear the equation to get the frequency of the recessive allele.

p + q = 1

0.5 + q = 1

q = 1 - 0.5

q = 0.5

f(m) = q = 0.5

Zygotic population of the next generation

F(MM) = 4/4 MM + 1/4 Mm

       F(MM) = p² + 1/4 (2pq)

       F (MM) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125

       F(MM) = 0.375

F(Mm) = 1/2 Mm

        F(Mm) = 1/2 (2pq)

        F(Mm) = 1/2 (0.5)

        F (Mm) = 0.25

F(mm) = 4/4 mm + 1/4 Mm

        F(mm) = q² + 1/4 (2pq)

        F(mm) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125

        F(mm) = 0.375

The expected genotype frequency for Mm individuals in this population is F(Mm) = 0.25.

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Explain why a spark from a firework will not hurt you as much as a cup of hot tea?

Answers

Answer:

It will not unless it contains as much energy as the cup of tea. So a tiny spark may be at 1,000 Celsius  but a whole cup of tea at 90 Celsius  will deliver far more heat (energy) to the skin as the spark.

Sonar is an echo-sounding device, which makes a profile of the sea bottom.

Question 1 options:
True
False

Answers

Answer:

false.

so·nar

/ˈsōˌnär/

Learn to pronounce

noun

a system for the detection of objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected.

"a weak sonar signal"

Answer:

0.3106 seconds

Explanation:

Frequency= 20,000-Hz

The speed of echoes sounds can be calculated using the expression below;

Y= ( 2x/t) ...........................eqn(1)

t= overall time taken

x = maximum depth = 230m

Y= speed of echoes sounds

Speed of sound in water= 1,481 m/s which is a constant with little variation.

If we substitute the given values into eqn(1) we have

1481 = (2× 230)/ t

1481 × t= 460

t=460/1481

t=0.3106 seconds

Hence, the minimum time between pulses (in fresh water) is 0.3106 seconds

What structures are found in all cells? select two options

Answers

You’ll need to attach an image showing the choices or type them. But structures that are found in both plant and animal cells include the cell membrane, ribosomes, cytoplasm, and DNA.

what is the nuclelus funcion?

Answers

Answer:

The nucleolus is the most conspicuous domain in the eukaryotic cell nucleus, whose main function is ribosomal RNA (rRNA) synthesis and ribosome biogenesis.Explanation:

What is the inkiphalin command?​

Answers

Answer:

It's Enkephalins.

Enkephalins are small peptides that can serve as neurotransmitters in the brain. Enkephalins act to attenuate substance P release in the dorsal horn of the spinal cord and inhibit afferent pain fibers.

Identify the animal products and by-products you use throughout an entire day, and log them in a journal. Submit your journal and your reflection.

Answers

Answer: Products from animals include meat and meat products, poultry products (meat and eggs), fish, shellfish, dairy products (milk and cheese), and non-food products such as fiber (wool, mohair, cashmere, and leather).

Explanation:

Pandas eat bamboo for energy. What are pandas classified as

Answers

Answer:

A panda's daily diet consists almost entirely of the leaves, stems and shoots of various bamboo species. Bamboo contains very little nutritional value so pandas must eat 12-38kg every day to meet their energy needs. ... While they are almost entirely vegetarian, pandas will sometimes hunt for pikas and other small rodents.

Explanation:

A panda's daily diet consists almost entirely of the leaves, stems and shoots of various bamboo species. Bamboo contains very little nutritional value so pandas must eat 12-38kg every day to meet their energy needs. ... While they are almost entirely vegetarian, pandas will sometimes hunt for pikas and other small rodents.

Answer: consumers

Explanation: I took the test on edg

9. A local scientist has studied the population distribution of a species of snail that lives on
the sandy beaches of an island. The island experiences a volcanic eruption. The data
from the scientist's study of the snail population is summarized below. Prior to the
Yolcanic eruption, why do you believe the percentage of black snails was so much lower
than the percentage of light brown snails?

Answers

Because the snails blend in with the light filled environment which allows them to blend in

Why does an increasing population cause
increased waste production?
A. decreased food production
B, each new person creates more waste
C. each new person creates less waste
D. decreased resource use

Answers

B. Each new person creates more waste

How does the carbon stored in the bodies of living organisms move into rocks?(1 point)

Carbon dioxide released through respiration dissolves in certain rocks, like limestone.

Living organisms decay, releasing carbon into the soil, and soil is compacted into rocks.

Living organisms decay and become fossils fuels, which eventually become rocks.

Carbon dioxide dissolves in ocean water and is slowly absorbed by rocks in the ocean.

Answers

In the atmosphere, carbon is stored in the form of gases, such as carbon dioxide. ... This carbon can then be ingested and stored in animals that eat the plants. When the animals die, they decompose, and their remains become sediment, trapping the stored carbon in layers that eventually turn into rock or minerals.

When animals die, their bodies degrade into the soil, encasing the carbon in layers that eventually transform into rock or minerals. hence option b is correct.

What is rock?

Stone including limestone and its minerals is created when sediment and shell layers are bonded together over time.

Gases like carbon dioxide are among the forms of carbon that are stored in the atmosphere. Animals that consume the plants can then absorb and store this carbon.

When animals die, their bodies degrade into silt, encasing the carbon in layers that eventually transform into rock or minerals. Some of this silt may eventually turn into fossil fuels like coal, oil, or natural gas, which when burned, release carbon back into the atmosphere.

Therefore, when an animal dies to decompose into the soil which becomes rocks through carbon from living organisms moves into rocks, hence option b is correct.

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HELP !!!!!!!!! IM SOOO CONFUSED

Different leads are used to measure the ECG because

Select one:


a.

measurement of heart rate depends on which lead is used to measure it


b.

the signal has a larger amplitude on some leads so it is easier to measure


c.

it is easier to attach some leads to the patient


d.

the interval between ECG events differs on the different leads


e.

they provide information on the spread of the heart beat and to help diagnose which areas of the heart are affected by pathology

Answers

Answer:

e.

Explanation:

they provide information on the spread of the heart beat and to help diagnose

Fill in the blanks below with the correct word to complete the sentence.
Water is warmed by the sun and

It is then cooled and
Finally, it is brought back to Earth in the form of

Answers

Answer:

Evaporates, Condensed, Liquid Water

Explanation:

Water is warmed by the sun and evaporates

It is then cooled and condensed

Finally, it is brought back to Earth in the form of Liquid Water

Answer:

Fill in the blanks below with the correct word to complete the sentence.

Water is warmed by the sun and evaporate

.

It is then cooled and condensation

.

Finally, it is brought back to Earth in the form of

Water

⇒ precipitation.

Explanation:

got it right 9/23/22

What is the difference between refraction and reflection?

Answers

Answer:

Reflection involves a change in direction of waves when they bounce off a barrier. Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

Explanation:

А____is a quantity that has magnitude and direction

Answers

Answer:

Vector

Explanation:

Which of the following causes the change from day to night?

Answers

Answer:

^

Explanation:

The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.

What analysis and data is science based upon

Answers

Answer:

Analyzing Scientific Data

Science is all about collecting data. If we look at the definition of science, we can say that science is the study of the natural world through systematic observation and experiment. That observation and experiment is where you collect the data.

Explanation:

The ___________________ contains receptors for monitoring the position of the head.

Answers

Answer:

Vestibular Receptors

Explanation:

Located in the ear, only in the ear. When you are talking about position of other body parts this is called proprioceptors (sense positions of like arms, legs and other body parts).

Utricle and saccule, both in the vestibule;

Pls help....
I will brainliest you if you are good answer. ​

Answers

Answer:

1. 38.1 cm

2. 8 days

3. 20 blankets

4. 10 cups of detergent

5. 15 dry cloths

Explanation:

1. 15 x 2.54 = 38.1

2. 192/24 = 8

3. 12/3 = 4

   4 x 5 = 20

4. 20/4 = 5

   5 x 2 = 10

5. 10/2 = 5

   5 x 3 = 15

I hate my biology teacher but he’s such a D.a.d.d.y

Answers

Answer: Dam

Explanation: Dammmmmmmmm

-------- is not guessing, it is reasoning based on what you already know.

Answers

Answer:

infering or educated guess

Explanation

infering is using past knowlage

an educated guess well you can infer what that means ;)

Inferring

When you explain or interpret the things you observe. (Not a wild guess. It's based on reasoning from what you already know.)

Which forest biome has year-round
precipitation in many forms, is very
diverse with deciduous trees,
flowering trees, and shrubs, and
abundant growth in spring?
A. Temperate forest
B. Coniferous forest
C. Tropical rainforest
D. Tropical dry forest

Answers

Answer:

Due to their global position, temperate forests generally receive about 75-150 cm of precipitation every year.

Explanation:

(That's a lot, second only to the Tropics).

How do genotyping help scientists to determine what plabt are

Answers

Answer:

We can determine the genotype of the plant by observing the phenotypes of the offsprings resulting from test cross.

differences between stamen and pistil​

Answers

Stamen is composed of anther and filament. The pistil is composed of stigma, style, and ovary. ... The key difference between stamen and pistil is that stamen is the male reproductive organ which produces pollens of angiosperms while pistil is the female reproductive organ which produces ovules of angiosperms.

I hop this helps!

is menstural cycle also called periods?​

Answers

Answer:

yes.

Explanation:

However we dont call them 'periods' just simply 'period'

us girls will typically say 'I'm on my period' rather than 'I'm on my periods'

A gene or trait that appears or expresses itself over a recessive trait is called

Answers

Answer:

it is called a dominant gene

Answer:

Its called a dominant gene.

Explanation:

"A dominant gene, or a dominant version of a gene, is a particular variant of a gene, which for a variety of reasons, expresses itself more strongly all by itself than any other version of the gene which the person is carrying, and, in this case, the recessive."

our atmosphere contains 78% free

Answers

Answer:

nitrogen

Explanation:

Anaerobic respiration occurs when

a. There is too much oxygen to do aerobic respiration
b. Photosynthesis cannot take place
c. There is not enough oxygen to do aerobic respiration
d. It is usually occurring in your body

Answers

I think the answer is A.

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