Ask Question, Ask an Expert


Ask Biology Expert

describe Genetics

Mendel is the father of modern genetics however there are some genetic characteristics that cannot be describeed by simple Mendelian genetics. Such is the case by the human blood types in which there are three alleles for the same gene, A B and o. A parent is able to pass allele A, B or o to the offspring based on the parent's genotype.

From these three alleles there are 4 blood types (phenotypes)- A, B, AB, and O and there are six genotypes: AA, Ao, BB, Bo, AB, or oo. This is an instance of codominance in which both A and B alleles are codominant to each other.

Blood types is able to be used in forensics to determine if blood is from the victim or criminal. Blood types is able to be used to determine parental source in situation where the father is unknown, but blood types can only eliminate certain blood types. DNA fingerprinting is a better method which is used often in criminal and parental determination cases.







A                        o





Punnett squares such as the one shown above are used to determine the likelihoods (percentages) for genotypes of offspring given specific genotypes for the parents.

1. In the illustration above the Punnett Square represents a cross (mating) among a male (on the left side) with blood type AB and a female, (top of square), with blood type A, genotype Ao.

Answer the subsequent for the cross represented above.

1. describe what are the possible blood types for the offspring?

2. describe what are the ratios or percentages for each possible blood type from this cross?

3. describe what blood type is not possible from this cross?

1. Fill out two Punnett squares for a cross among a male with blood type B and a female with blood type AB. (Note that we don't know if the father is genotype BB or Bo from the information given. Therefore there are two solutions to the possible cross.) Set up two Punnett squares as well as answer the following problems about them.

1. What are the probable blood types for the cross between the type B (BB or Bo?) male and AB female?

2. What are the percentages (%) or possibilities for each blood type in the offspring?  What blood type(s) wouldn't be possible in a cross between these two parents?

Biology, Academics

  • Category:- Biology
  • Reference No.:- M919170

Have any Question? 

Related Questions in Biology

Question 1 in drosophila melanogaster eyeless ey is a

Question 1: In Drosophila melanogaster, eyeless (ey) is a recessive trait in which the eyes are tiny or absent. The ey locus is found on chromosome 4. Monosomy and trisomy for this very small chromosome are compatible wi ...

Discussion 1 and 2discussion 1- explain the difference

Discussion 1 and 2 Discussion 1- Explain the difference between the first and second line of body defenses against infection by pathogens Discussion 2- Identify the function(s) of the lymphatic system. Identify one diffe ...

Conclusion for five kingdom classification merits and

Conclusion for five kingdom classification merits and demerits.

1 which karyotypes shows a normal male individual ie a male

1. Which karyotype(s) shows a "normal" male individual (i.e., a male individual with no trisomies or monosomies)? A. A and B B. B only C. C only D. D only E. A, B, C & D 2. Which karyotype(s) shows an individual with Tur ...

Which theoretical perspective that guides the nursing

Which theoretical perspective, that guides the nursing process with assessment of the family, do you find to be the most helpful and effective? Why is this theory more appealing to you than the others?

Please answer the questions below providing references to

Please answer the questions below providing references to support claims Is it is essential that DNP-prepared leaders understand their organization's political and strategic system processes? What are the four steps of t ...

Answer in a word or two1 name the type of reproduction in

Answer in a word or two: 1. Name the type of reproduction in which two parents are involved? 2. Name the fundamental methods of reproduction? 3. Name the kind of reproduction in which opposite sexes are not involved. 4. ...

Evolutionary biology in the age of genomics- q1

Evolutionary Biology in the age of Genomics- Q1. Phylogenetic trees- You are analyzing sequences sampled from four turtle species (A-D), considering a genomic region that is 75 base pairs long. You observe the following ...

Write a paper of 500-750 words not including the title page

Write a paper of 500-750 words (not including the title page and reference page) paper on Evidence-Based Solution on adoptions of Electronic Medical Record (EMR). Address the following criteria: 1. Proposed Solution: (a) ...

Biological system is amazing a fellow student claims it can

"Biological system is amazing", a fellow student claims, "it can drive any thermodynamically unfavorable reaction forward, and does not need to follow the thermodynamic laws." How would you respond to this statement? Giv ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate