Huntington's disease, which causes degeneration of neurons, runs in Mark's family. Huntington's is a heritable, autosomal dominant genetic disease. In an autosomal dominant disease, only one abnormal allele is required to cause the disease in offspring. However, it is possible that not all offspring will receive the abnormal allele from an affected heterozygous parent. Family members that have the disease include Mark's maternal grandfather and Mark's maternal aunts. Mark's maternal grandmother does not have the disease. Because symptoms of Huntington's disease do not appear until later in life, genetic testing is necessary to determine whether a younger individual possesses the allele for the disease. These tests determined that Mark's mother does not carry the allele for Huntington's disease. Mark's paternal aunt suggested that Mark create a pedigree to track the disease in his family. Use the symbols provided to complete the pedigree. Each symbol may be used more than once.

Answer:

The correct answer is - maternal grandmother unaffected, maternal father affected, two maternal aunts affected, mother not affected and paternal side not affected so Mark is also not affected. (check the image)

Explanation:

As we know Mark's paternal grandparents do not have Huntington's disease. If the grandparents are normal the father and paternal aunt of Mark does not carry the disease allele therefore the symbols on the right represent Mark's paternal family.

We also know that the grandfather from the maternal side is affected and maternal aunts also have Huntington's disease, it is found out by the genetic testing that the mother is unaffected which means Mark will be unaffected as well as mother and father both are normal.

Rudy is analyzing a list of statements about structural organization within
the human body. The chart shows the list of statements.
1
2
3
Human Body Structural Organization
The human body has more systems than cells
The human body has more cols than systems
Cabs are made up of different tissues.
Organs are made up of cells and tissues
Systems are more complex than organs
4
S
Which statements are true?
1 and 2
2 and 3
2.4 and 5
3.4 and 5

How do dating methods of geological evidence prove the convolution of earth systems?

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two effectors in the body

8. Plant cells have some parts that animal cells do not have. Plant cells have __________, __________, __________.
9. Most of the organelles in plant and animal cells are inside the __________
10. _________ cells have a “box” shape,
11. __________ cells are more round
12. The ____________ in plant cells provide an additional layer outside the cell membrane for support the plant.
13. The cell wall separates the inside of the _________ cell from the environment.
14. __________ in plant cells are responsible for performing the process of photosynthesis. If they stop working, photosynthesis will not be taking place in the plant.
15. Plant cells have a ________________ that stores water, nutrients, food and waste products.
16. The________________ are the organelles that makes proteins.
17. Cells move water and materials through the _____________.

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Please answer .Thanks

If a flower is wilting, which structure inside its cells lacks water?


vacuole

cell wall

carpel

chloroplast

maslows theory of self actualization

How are traits passed from parent(s) to offspring in sexual vs. asexual reproduction?

The island spotted skunk and the island fox are both predators of the island
deer mouse (the prey). How could these two predators establish different
niches and still prey upon island deer mice? *

A. the island spotted skunk hunts at different times than the island fox
B. the island spotted skunk hunts in the same area as the island fox
C. the island fox eats only cherries instead of deer mice
D. the island deer mice swim to a different island to avoid predators

How can a hunter help wildlife conservation efforts? A, By making sure to always obey the rules of firearm safety By making sure to always obey the rules of firearm safety B, By always bagging under the daily limit By always bagging under the daily limit C, By donating to conservation organizations, or helping to build habitats for local wildlife By donating to conservation organizations, or helping to build habitats for local wildlife D, By always bagging over the daily limit By always bagging over the daily limit

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does coal releases carbon dioxide into the atmosphere?​

Could you explain the roles and relationships among producers, consumers, and decomposers, and identify the distinguished characteristics of several common relationships among organisms in an ecosystem near you?

3. Earthquakes are most likely to occur near?

O Fault

O Ocean

O Mountain

O Tsunami

Explain how it is known that the environment changed over time.

Which of these landforms is created due to deposition?

Cirque
Fjord
Horn
Sandbars

Analogy and homology are important concepts used in comparing species. Traits are homologous if they are derived, evolutionarily and developmentally, from the same source structure. Traits are analogous if they have similar functions but are derived, evolutionarily and developmentally, from different source structures. A classic example of analogous structures is insect wings and bat wings. Which of the following pairs of structures are analogous and which are homologous?

a. Dorsal fins of porpoise and a salmon
b. Flippers of porpoise and pectoral fins (front fins) of salmon
c. Joined leg of ladybird beetle and a robin
d. Rhesus monkey's tail and human's coccyx
e. Bright red bracts of poinsettia and green leaves of rose
f. Red bracts on a poinsettia and red petals on rose

For a trait that is located on the X chromosome, who is more likely to have
a recessive phenotype? Hint: Think about the number of X chromosomes
that a male and female have and think about how someone would express
a recessive phenotype.
Select one:
O a. no difference in the odds
O b. a male
Oc: a female

!!PLEASE HELP!!
In 6 sentences, Cellular & Physical Comparison. Tell me the differences between plants and animals.

Genes carry the codes that tell the body how to form itself.
True or False

If the n number of an organism is 13, then the 2n number would be?

A.1
B.7
C.13
D.26

I put a picture does anyone know the answer to that

The young maggots grow rapidly because of _____ offered by the dead body.

the bad smells
the rich food source
the safety
the garbage located near the body

Reverse faults are the result of tension.
True or false?

The chemical that moves from the axon of one neuron across a gap to the dendrite of
another is a n):
Schwann Cell
Vitamin A
Node of Ranvier
Neurotransmitter

What is one of the causes of mechanical weathering? A acid rain B oxidation C animal actions D carbon dioxide​

what is the job for tRNA ?

a. to transport amino acids to the ribosome for protein synthesis

b. to act as a template for the coding strand of DNA

c. to serve as a temporary copy of the coding strand of DNA

d. to provide the energy needed to power protein synthesis

How many stops can you potentially make on your trip? Why?