1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PilotLPTM [1.2K]
3 years ago
13

John and sue are expecting a child, but are concerned about a rare autosomal recessive disease that is present in both of their

families. in the pedigree below, john is represented as individual iii-11 and sue is represented as individual iii-12. john\'s sister, iii-10, and sue\'s brother, iii-13, both do not show evidence of the disease, but john\'s paternal grandmother and sue\'s maternal grandfather both had the disease. assign the appropriate symbol to each individual in the pedigree.

Biology
1 answer:
Vladimir79 [104]3 years ago
8 0
Attached is the pedigree. I found the exercise on the internet.

The individuals that are missing a symbol are: II-5, II-6, II-8, III-10, III-11, III-12, III-13.

The individual II-5 would have the half black/half white square. A square because in the introductory text says that it's John's paternal grandmother (I-2) that has the disease. Half black/half white because his mother had the disease so she passed one allele that's necessarily a disease allele, and his father doesn't carry the disease or manifest it which means that from him, John's father (II-5) only received a normal allele.

The individual II-6 would have a question mark in a circle. A circle because she is John's mother once his father is the individual II-5. A question mark because we don't have information as for the manifestation of the disease in her, though we do know that she is either a carrier of the disease or inflicted by the disease because she has a daughter (John's sister) that has the disease meaning that John's sister received two alleles for the disease.

The individual II-8 would have the half black/half white circle. A circle because she is Sue's mother once her father is the individual II-7 (a square). Half black/half white because her father had the disease so he passed one allele that's necessarily a disease allele, and her mother doesn't carry the disease or manifest it which means that from her, Sue's mother (II-8) could only received a normal allele.

The individual III-10 would have a question mark in a circle. A circle because she is John's sister as said in the introductory text. A question mark because we can't affirm whether she is a carrier of one disease allele or does not carry the disease at all. We know by the introductory text that she doesn't have any signs of the disease but she could've have received a disease allele from her father or her mother if her mother is simply a carrier of one disease allele, or would definitely received a disease allele from her mother, and not from her father, if her mother has the disease.

John, the individual III-11 would have a question mark in a square. A square because is John, a male. A question mark because we can't affirm whether he is a carrier of one disease allele or does not carry the disease at all. We gather, by the introductory text, that he doesn't have signs of the disease but he could've have received a disease allele from his father or his mother if his mother is simply a carrier of one disease allele, or would definitely received a disease allele from his mother, and not from his father, if his mother has the disease.

Sue, the individual III-12 would have a question mark in a circle. A circle because is Sue, a female. A question mark because we can't affirm whether she is a carrier of one disease allele or does not carry the disease at all. By the introductory text, we gather that she doesn't have signs of the disease, but she could've have received a disease allele from her mother, once her mother is a carrier of a disease allele, turning her into a carrier as well, or could've received the normal allele from her mother. From her father she only received a normal allele.

The individual III-13 would have a question mark in a square. A square because he is Sue's brother according to the introductory text. A question mark because we can't affirm whether he is a carrier of one disease allele or does not carry the disease at all. We know, by the introductory text, that he doesn't show any signs of the disease, but he could've have received a disease allele from his mother, once his mother is a carrier of a disease allele, turning him into a carrier as well, or could've received the normal allele from his mother. From his father he only received a normal allele.

You might be interested in
Which event occurs in telophase II
olchik [2.2K]

Explanation:

During telophase II and cytokinesis, chromosomes arrive at opposite poles and begin to decondense; the two cells divide into four unique haploid cells.

3 0
3 years ago
Read 2 more answers
Please help! I'll give you a medal! Sorry it might be a lot!
sveticcg [70]
1. Green, because it serves as a perfect camouflage against prey in vegetations.

2. It is a process whereby a breeder of animals or plant cultivator, chooses to breed between different species for their characteristics that are inheritable.

3. Mutations is an evolutionary process that helps a specie better adapt to their environment. DNA changes causes by mutation can help lighten or darken colour pigment. Like in the dark-coated mouse, where 9 changes to the DNA coding for color makes its fur lighter for better camouflaging.
6 0
3 years ago
Extreme range temperatures can shatter rocks in deserts environment. Help me out please
Musya8 [376]
I believe it’s | Weathering |


How you know:

The damage was done by temperature, which has to do with weather.

Erosion is usually caused overtime by water elements , and it causes the rocks to erode.

Answer: weathering
8 0
3 years ago
Which location shown on the diagram identifies Earth's hottest layer?
Sveta_85 [38]

The answer to your question is A

5 0
3 years ago
A population of fruit faces food shortage when the fruit trees they depend on for food begin to die from disease. What type of g
ololo11 [35]

Answer:

The correct answer is - logistic growth.

Explanation:

The growth of bats is only limited by the fruit trees they feed on. It is an example of the concept of carrying capacity of an environment, so this is best modelled by logistic growth.

The Types 1-3 of survival growth are related to age, while exponential growth does not have any limits related to environmental capacity.

The correct answer is - logistic growth.

5 0
3 years ago
Other questions:
  • What is a example of allele
    13·1 answer
  • Glycerol is one of two molecules that make up a monomer known as?
    11·1 answer
  • A friend tosses a ball to you. Which action does your body take first to catch
    6·2 answers
  • What might the continued burning of fossil fuels do for future generations?
    13·2 answers
  • Is acetate a natural or synthetic fiber
    11·1 answer
  • What is ultimate purpose of digestion
    6·1 answer
  • PLZ HELP ME Question 3
    14·1 answer
  • PPLEASE HELP!!!! WILL GIVE BRAIN!!!!
    5·1 answer
  • Oum-tdbs-cds come on join​
    6·1 answer
  • What is amylopectin?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!