BIOLOGY COLLEGE

7. Wha9. Marfan syndrome is an inherited condition that affects the connective tissue, resulting in
unusually long bones and spinal curvature, as well as vision, cardiac, and respiratory
problems. The syndrome tends to become increasingly severe over time. The following
pedigree shows inheritance of Marfan syndrome in a multigenerational famil (5)y.
8. Wh
5
9. Tra
Th
the
III
Be
us
wi
a) How is this syndrome inherited (dominant, recessive or sex-linked)?
2
b) Can you determine individual 114's genotype? Explain.
b.
с
c) Individual III and I12 are considering having another child. What is the probability that
this child will have Marfan syndrome? Explain using a Punnett square.

Answers

Answer 1
Answer:

Answer:

The correct answers are :

a) syndrome Could be autosomal recessive or dominant

b) If it is autosomal recessive - no,

and if it is autosomal dominant - yes, (II-4) - Aa

c) probability of the another child :

Autosomal recessive: Aa x aa 50%

Autosomal dominant: aa x Aa 50%

Explanation:

a) Marfan syndrome could be inherited by the autosomal recessive or dominant pattern on the basis of following characters according the pedigree gives:

- transmitted by anyone regardless of sex male or female

- characters should not skip generations

- A cross between affected person and an normal person should produce approximately half of the affected offspring.

b) Assuming that autosomal dominant than there is two possibilities :

1) in case of I 2 genotype is heterozygous which means it is Aa which will produce Aa Aa aa and aa with crossing with aa as per pedigree however it is incorrect according the offspring given in II.

2) If I 2 is AA- then offspring will be Aa, Aa, Aa and Aa. which is correct according the pedigree.

thus, the answer is - Aa

c) the punnet square as per question is :

              II2  -  Aa ×  II1 - aa

      A      a

a    Aa     aa

a    Aa     aa

similar with autosomal recessive

thus, the correct answer is 2 out of 4 that is 50%

Related Questions

In guinea pigs, a single gene with two alleles (B and b) determines coat color. Black (B) is dominant over white (b). A guinea pig from a true-breeding black strain is mated with a guinea pig from a true-breeding white strain. The F1 progeny are all black. Two of the F1 progeny are mated with each other. What proportion of the black F2 progeny is expected to be heterozygous?
The discovery, characterization, and the application of the CRISPR/CAS system has revolutionized the study of genetics and genetic engineering. Please select all correct answers regarding its mechanism of action and application. Multiple correct answers are possible, and partial credit will be given.A. CRISPR sequences in bacteria resemble those from bacteriophage and plamid DNA. B. For reverse genetics studies, CRISPR/CAS can be used to replace wildtype alleles with mutant alleles which can knockout the function of the target genes. C. CRISPR is a DNA sequence in the bacterial chromosome. D. The guide RNA directs CAS to specific DNA sequences. E. The CRISPR/CAS system was discovered in bacteria, and its natural function is the equivalent of an immune system in bacteria for "remembering" viral infections and for attacking viral DNA in future infections.
Please help thanks for the answers
You have been reading for a while and want to rest your eyes and listen to the next section of your chapter. You have finish reading the assignment for the next quiz but want some extra review with flashbacks. You begin reading your E texts with blank letters against a white background but want to try changing the color mode to sepia instead. You have highlighted importing content, and added notes as you read.Now you want to compile and export these notes as a pdf study reference. You’ve highlighted important terms and ideas in your e text . Now you want to hide your highlights as you review for an exam.
What is the phase that not all cells enter, but it is a phase where cells are not actively dividing

Are tonsils lymph nodes or nodules?

Answers

They are lymph nodes. Lymph nodules are much smaller

Help me and ill give you brainliest :)Explain the three states of water and how it changes state. Use terms melt, boil, sublimation, evaporation, deposition.
-this is science-

Answers

water canexistinthreestates;liquid,solidandgases.

Explanation:

At temperature below zero degree Celsius, water exists as a solid but as it absorbs temperature from Its surroundings, it undergoes melting and turns into liquid water. More application of heat makes it boil leading to the evaporation and vapourisation of water molecules( note: evaporation occurs at all temperature).

Answer:

give them brainlist

Explanation:

A dog called the Maltese doesn't shed. This type of dog most likely came about through _____.hybridization
genetic engineering
recombinant DNA
cloning

Answers

Answer:

The correct answer is hybridization.

Explanation:

The procedure by which organisms of distinct species, breed, or varieties are chosen to interbred so that to generate offspring with the wanted characteristics is known as hybridization. Identically, the Maltese dogs were bred selectively so that to achieve the desired characteristics like less shedding of hairs, small size, and others.
hybridization:C ihnd9sun93u

the snake does not get as much energy from eating the same amount of food as the grasshopper. The statement that best explains why this is true is

Answers

Answer:

Grasshoppers use up much of their energy for life processes.

Explanation:

Answer:

hm i have been wanting the answer to the same question

Explanation:

Bone does not amplify sound during speaking is _____________________

Answers

Answer:

Bone is a solid tissue, which resists a high impact of forces in its major axis.

The function of this fabric is not to transmit sounds, since it does not provide the elasticity, and the necessary elongation that is needed to generate the rope effect as in the case of muzzle cords.

Explanation:

The more rigid and less elastic the fabric is, the less sound it will transmit.

Sound strings, or mouth strings, are those that tighten, are flexible and resonate with different vibrations, in the case of bone tissue, sound vibrations are not influenced in their conformation because they do not have the ability to transmit them. .

The bone tissue, transmits impact forces or high newton levels, does not fulfill the function of transmitting vibrations and emitting sounds in terms of this type of vibrations and their frequencies.

Question 1Why is water necessary for living organisms?


All organisms need water to stay clean.


All organisms need water as an energy source.


All organisms need water to transport chemicals into their cells.


All organisms live in the water.

2 points

Answers

ether 
All organisms need water as an energy source.


All organisms need water to transport chemicals into their cells.
Other Questions
25 POINTS AND BRAINLIEST AND 5 STARS AND THANKS!!!!!!!!!!Laura said that the Mississippi Delta is formed from constructive forces. Lance said that the Mississippi Delta is formed from destructive forces.
Which molecule could he make that consist of long chains of red and black colored balls
Explain the term “soil profile” (needs to be a paragraph)
What do cells contain?