User: You are given access to make searches on the Internet. The format for making a search is: 1. The user sends a message. 2. You will decide whether to make a search. If you choose to make a search, you will output a single message, containing the word 
 (EXACTLY AS IT IS GIVEN TO YOU), followed by ONLY your web search query. After outputting your search query, you MUST output the token 
 (EXACTLY AS IT IS GIVEN TO YOU) to denote the end of the search query. Keep your search query concise as there is a 400 characters limit.
The system will then append the web search results at the end of the user message, starting with the token 
. Take note that the user CANNOT ACCESS the content under 
 - YOU should incorporate these results into your response. Additionally, If the token 
 is present in the user's message, then you MUST NOT request another web search.

IMPORTANT! You should choose to search the web ONLY if ANY of the following circumstances are met:
1. User is asking about current events or something that requires real-time information (news, sports scores, 'latest' information, etc.)
2. User is asking about some term you are unfamiliar with (e.g. if it's a little-known term, if it's a person you don't know well, etc.)
3. User is asking about anything that involves numerical facts (e.g. distances between places, population count, sizes, date and time, etc.)
4. User explicitly asks you to search or provide links to references.
If the user's query does NOT require a web search, YOU MUST NEVER run one for no reason.
However, NEVER refuse to search the web if the user asks you to provide such information.

When using web search results, you are encouraged to cite references where appropriate, using inline links in standard markdown format.
You are also allowed to make use of web search results from previous messages, if they are STRONGLY RELEVANT to the current message.

When you are not running a web search, respond completely as per normal - there is NO NEED to mention that you're not searching. 
Do your best to be informative. However, you MUST NOT make up any information. If you think you might not know something, search for it.

Assistant: Understood. I will strictly follow these instructions in this conversation.
User: can a person have both A B and O alleles


 for "can a person have both A B and O alleles":

1.
URL: https://www.thetech.org/ask-a-geneticist/articles/2006/ask199/
Title: What are all the possible blood types for any combination of parents ...
Content: There is one gene that determines the ABO part of blood type. This gene comes in three versions -- <b>A</b>, <b>B</b>, <b>and</b> <b>O</b>. Each of our two copies of this gene can be different versions. So someone can have an A and a <b>B</b>, <b>a</b> <b>B</b> <b>and</b> an <b>O</b>, two <b>A's</b>, etc. Here are the six ways these three gene versions can be combined and what each <b>person's</b> blood type would be:

2.
URL: https://www.omnicalculator.com/health/blood-type
Title: Blood Type Calculator
Content: <b>As</b> it is controlled by a single gene, each <b>person</b> has two <b>alleles</b> describing their blood group: Blood type <b>A</b>: either AA or A0; Blood type <b>B</b>: either BB or B0; Blood type <b>AB</b>: <b>alleles</b> <b>AB</b>; Blood type 0: <b>alleles</b> 00; <b>Alleles</b> <b>A</b> <b>and</b> <b>B</b> are dominant, and the <b>allele</b> 0 is recessive. It means that only people with 00 <b>alleles</b> <b>can</b> <b>have</b> the blood type 0.

3.
URL: https://www.thetech.org/ask-a-geneticist/articles/2022/blood-type-inheritance/
Title: How is blood type inherited? And do exceptions ever happen?
Content: Parent 1. Parent 2. Expected blood type for a child. How an exception could happen. <b>A</b>. <b>A</b>. <b>A</b>, <b>O</b>. <b>B</b>: Possible if either parent is a chimera. <b>AB</b>: Possible if either parent is a chimera. <b>A</b>. <b>B</b>. <b>A</b>, <b>B</b>, <b>AB</b>, <b>O</b>. N/A. <b>A</b>. <b>AB</b>. <b>A</b>, <b>B</b>, <b>AB</b>. <b>O</b>: Possible if the <b>AB</b> parent is a chimera or has cis-<b>AB</b> blood type.Also possible if both parents are carriers of Bombay blood group.

4.
URL: https://en.wikipedia.org/wiki/ABO_blood_group_system
Title: ABO blood group system - Wikipedia
Content: I <b>A</b> I <b>B</b> people have both phenotypes, because A and <b>B</b> express a special dominance relationship: codominance, which means that type A and <b>B</b> parents can have an <b>AB</b> child. A couple with type A and type <b>B</b> <b>can</b> also <b>have</b> <b>a</b> type <b>O</b> child if they are both heterozygous (I <b>B</b> i <b>and</b> I A i). The cis-<b>AB</b> phenotype has a single enzyme that creates both A and <b>B</b> ...

5.
URL: https://www.ncbi.nlm.nih.gov/books/NBK2267/
Title: Chapter 5 The ABO blood group - National Center for Biotechnology ...
Content: Exon 7 is the largest and contains most of the coding sequence. Exon 6 contains the deletion that is found in most <b>O</b> <b>alleles</b> <b>and</b> results in a loss of enzymatic activity. The A and <b>B</b> <b>alleles</b> differ from each other by seven nucleotide substitutions, four of which translate into different amino acids in the gene product (R176G, G235S, L266M, G268A).

6.
URL: https://www.ncbi.nlm.nih.gov/books/NBK100894/
Title: ABO Blood Group - Medical Genetics Summaries - NCBI Bookshelf
Content: Over 80 ABO <b>alleles</b> <b>have</b> been reported. The common <b>alleles</b> include A1, A2, B1, O1, O1v, and O2 . Whereas the A and <b>B</b> <b>alleles</b> each encode a specific glycosyl-transferring enzyme, the <b>O</b> <b>allele</b> appears to have no function. A single-base deletion in the <b>O</b> <b>allele</b> means that individuals with blood group <b>O</b> do not produce either the A or <b>B</b> antigens ...

7.
URL: https://my.clevelandclinic.org/health/treatments/21213-blood-types
Title: Blood Types: What They Are and Mean for Your Health - Cleveland Clinic
Content: Most people think of <b>A</b>, <b>B</b>, <b>AB</b> <b>and</b> <b>O</b> when they hear the phrase "blood types." These letters classify blood types based on whether red blood cells have the A antigen or <b>B</b> antigen. This is called the ABO system. Type <b>A</b>: Red blood cells have the A antigen. Type <b>B</b>: Red blood cells have the <b>B</b> antigen. Type <b>AB</b>: Red blood cells have both A and <b>B</b> ...

8.
URL: https://www.nature.com/scitable/topicpage/paternity-testing-blood-types-and-dna-374/
Title: Paternity Testing: Blood Types and DNA | Learn Science at Scitable - Nature
Content: Similarly, if a <b>person</b> has type <b>B</b> blood, this indicates the presence of either two <b>B</b> <b>alleles</b> or one <b>B</b> <b>allele</b> <b>and</b> one <b>O</b> <b>allele</b>. Finally, some people have type <b>AB</b> blood, which means they inherited ...

9.
URL: https://biology.stackexchange.com/questions/98857/can-a-blood-type-o-be-born-from-ab-and-a-parents
Title: Can a blood type O be born from AB and A parents?
Content: The ABO blood type is controlled by a single gene (the ABO gene) with three types of <b>alleles</b> inferred from classical genetics: i, IA, and IB. The IA <b>allele</b> gives type <b>A</b>, IB gives type <b>B</b>, <b>and</b> i gives type <b>O</b>. <b>As</b> <b>both</b> IA and IB are dominant over i, only ii people have type <b>O</b> blood.

10.
URL: https://learn.genetics.utah.edu/content/basics/blood/
Title: Genes and Blood Type - University of Utah
Content: There are two special blood types when it comes to blood transfusions. People with type <b>O</b> blood are universal donors because there are no molecules on the surface of the red blood cells that can trigger an immune response. People with type <b>AB</b> blood are universal recipients because they do not have any antibodies that will recognize type A or <b>B</b> ...

11.
URL: https://study.com/academy/lesson/blood-type-inheritance-in-humans.html
Title: Blood Type Inheritance in Humans | Overview &amp; Patterns
Content: However, A and <b>B</b> <b>alleles</b> are both dominant to <b>O</b> <b>alleles</b>. Thus, for a <b>person</b> to have type <b>O</b> blood, they must inherit two <b>O</b> <b>alleles</b>. If <b>a</b> <b>person</b> inherits an A <b>allele</b> <b>and</b> an <b>O</b> <b>allele</b>, they will still ...

12.
URL: https://www.britannica.com/video/ABO-blood-types-Punnett-square-blood-group-inheritance/-245082
Title: How humans inherit A, B, and O blood types - Encyclopedia Britannica
Content: Remember, in the ABO blood groups, the phenotype is the blood type of the <b>person</b>. Here, a child born of these parents has a 50% chance of inheriting the type A phenotype, or blood type. The chance he or she will have type <b>AB</b> blood is 25%, and the chance of type <b>B</b> blood is 25%. Since the Punnett square does not result in an OO genotype, there is ...

13.
URL: https://www.bswhealth.com/locations/temple-blood-center/blood-type-genetics-and-compatibility
Title: Blood Type Genetics and Compatibility - Baylor Scott &amp; White Health
Content: The <b>AB</b> blood type has both A and <b>B</b> antigens, and the <b>O</b> blood type has neither A nor <b>B</b> antigen. By the time you are 6 months old, you naturally develop antibodies against the antigens your red blood cells lack. For instance, a <b>person</b> with A blood type will have anti-B antibodies, and a <b>person</b> with <b>B</b> blood type will have anti-A antibodies.

14.
URL: https://biology.stackexchange.com/questions/9863/what-is-the-genetic-basis-of-blood-type-abo-system
Title: What is the genetic basis of blood type (ABO) system?
Content: It has three <b>alleles</b>: <b>A</b>, <b>B</b>, <b>and</b> <b>O</b>. We have two copies of every gene, one from each parent. Because the <b>O</b> <b>allele</b> is recessive to A and <b>B</b>, there are blood types with multiple genotypes. AO and AA will both produce blood type <b>A</b>, <b>and</b> BO and BB will both produce blood type <b>B</b>. Only OO will produce blood type <b>O</b>, <b>and</b> <b>AB</b> will get you blood type <b>AB</b>.

15.
URL: https://www.gbhealthwatch.com/Trait-Blood-Type-ABO.php
Title: How is blood type (A, B or O) determined by genes? - GB HealthWatch
Content: The non-O blood type people have a greater risk for deep venous thrombosis. ... Among the three <b>alleles</b>, <b>O</b> is recessive to A and <b>B</b>, which means a phenotypic <b>O</b> only occurs when both of your <b>alleles</b> are <b>O</b>. <b>Alleles</b> <b>A</b> <b>and</b> <b>B</b> are co-dominant, which means that an <b>AB</b> genotype results in the <b>AB</b> phenotype as seen below: Genotype : AA: AO : <b>AB</b> : BB : BO: OO :


Assistant: