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
Dima020 [189]
3 years ago
8

If a mother has a blood type AB+- and her father has a blood type B- and she marries a man with O- blood type. What is the perce

nt chance their son will be B- blood type?
Biology
1 answer:
Marina CMI [18]3 years ago
8 0
Genetics, blood type gene has two alleles, each allele has genotype A, B or O. The A and B are dominant, and O is recessive. So allele A combined with allele O is type A. Similarly, BO is type B, AA is type A, BB is type B, OO is type O, and AB is typeAB.

If both parents have type A blood, then the alleles could be AA or AO, thus the allele A frequency is 75%, allele O frequency is 25% for both parents. 
So the chance of alleles OO is 25% × 25% = 6.25%, 
alleles AA is 75% × 75% = 56.25%, 
alleles AO is 75% × 25% = 18.75%, 
alleles OA is 25% × 75% = 18.75%.
Since AA, AO and OA are blood type A, and OO is blood type O, thus their child has 6.25% chance to be blood type O and 93.75% chance to be blood type A. 

The +/- is called the rhesus factor, with + being dominant, and - being recessive.
So if both parents are -, the kids are always -, otherwise the kids might be + or -. 

Child Blood Type Estimate Table:
Father's Blood TypeABABOMother's
Blood
TypeAA/OA/B/AB/OA/B/ABA/OBA/B/AB/OB/OA/B/ABB/OABA/B/ABA/B/ABA/B/
You might be interested in
What is the only way that carbon dioxide is removed from the carbon cycle?
Leokris [45]

Explanation:

Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.

8 0
2 years ago
Which sentence uses the past participle form of the verb draw?
nirvana33 [79]
Choice b choice b choice b choice b choice b

6 0
3 years ago
1)Which of the following describes how infectious agents in the environment would most likely affect one’s personal health?
kvasek [131]
<span>1. c) Exposure would weaken the body’s immune system and leave it unable to fight future infections.
</span>2. <span>c) Excess amounts are removed by the kidneys and excreted along with urine.</span>
3 0
3 years ago
Read 2 more answers
The nurse is reviewing the medication administration record (mar) of a client at 39 weeks' gestation and notes that she is order
Orlov [11]

The priority after administering is to assess fetal heart rate. After administering an opioid to a laboring mother, the main concern is to evaluate the effect on the fetus. Opioid administration can cross the placental obstruction with signs as well as measuring heart rate and variability. Subsequently after birth, there may be a reduction in attentiveness. Maternal factors of a reduced blood pressure, constipation and dry month are of a lesser importance.

5 0
2 years ago
Explain how the data from the river samples showed that there was a problem with the water treatment plant.
Agata [3.3K]

Answer:

The water treatment plant does not work properly.

Explanation:

The data from the river samples showed that there was a problem with the water treatment plant because there is high amount of pollutants are present in the river sample. The presence of pollutants in the samples shows that the water treatment plant did not work properly, if they did no pollutants are present in the river water so this presence of pollutants indicates inefficiency of water treatment plant.

5 0
2 years ago
Other questions:
  • A corn plant known to be heterozygous at three loci is testcrossed. The progeny phenotypes and numbers are as follows:+ + + 455a
    8·1 answer
  • What medical term refers to what is commonly called a miscarriage?
    12·1 answer
  • Can someone please help me with this Assignment: Create a working bibliography using the note cards below. provide 2-3 sentences
    10·1 answer
  • What is the largest gland in the body?
    10·2 answers
  • By what reproductive mechanism does a haploid animal grow?
    15·2 answers
  • The biopsy technique in which only part of the lesion is cut out is a/ am
    9·1 answer
  • This hypothetical pedigree for a disease in humans illustrated inheritance that is
    7·1 answer
  • Compare and Contrast how electron transport is used to generate proton gradients in chloroplasts and mitochondria. Include more
    12·1 answer
  • Match each description with the appropiate item.
    8·1 answer
  • Describe how a wave forms in a lake. Explain what would
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!