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
lina2011 [118]
3 years ago
10

A man and a woman are both carriers for two autosomal recessive disorders, PKU (chromosome 12) and cystic fibrosis (chromosome 7

). If they have a daughter, what is the probability that she will have PKU but not CF?
Biology
1 answer:
ValentinkaMS [17]3 years ago
6 0

Answer:

Pr= (3/16)

Explanation:

It was stated that both the man and the woman are both carriers for two autosomal recessive disorders, PKU (chromosome 12) and cystic fibrosis (chromosome 7).

∴ let Aa¹Bb° represent the traits in the Man

Where;

Aa¹ = carrier of PKU

Bb° = carrier of cystic fibrosis

Also, let Cc¹Dd° represent the traits in the woman

Where;

Cc¹ = carrier of PKU

Dd° = carrier of cystic fibrosis

Now, if Aa¹Bb° self-crossed, we'll have the F1 progeny as AB, Ab° , a¹B and a¹b°

also, if Cc¹Dd° self-crossed, we have CD, Cd° , c¹D and c¹d° as their F1 progeny

In the F2 generation, the dihybrid cross between the F1 generations will be:

AB, Ab° , a¹B, a¹b°    × CD, Cd° , c¹D, c¹d°

ACBD, ACb°D, a¹CBD, a¹Cb°D

ACBd°, ACb°d°, a¹CBd°, a¹Cb°d°

Ac¹BD, Ac¹b°D, a¹c¹BD, a¹c¹b°D

Ac¹Bd°, Ac¹b°d°, a¹c¹Bd°, a¹c¹b°d°

Only (a¹CBD, Ac¹BD, a¹c¹BD)  shows the probability that she will have PKU but not CF.

You might be interested in
Energy that is not passed on from one trophic level to the next is _
ryzh [129]
<span>a. constructed from thick aluminum walls that can control the nuclear reactions </span>
3 0
3 years ago
Read 2 more answers
On what does the recommended time (duration) of an endurance training workout depend? Frequency specificity intensity mode
laila [671]

The correct answer is intensity.  

The intensity signifies towards the extent of energy exhausted at the time of performing exercise. The intensity differs with each individual. It has been observed that intensity possess an influence on what fuel the body utilizes and what kind of changes the body makes after performing exercise.  

It is the concentration of the physical power, which the body utilizes at the time of doing an activity. For example, the intensity of the exercise illustrates how hard the body has to function to walk a kilometer in twenty minutes.  


7 0
2 years ago
During translation, the peptide bond formation is catalyzed by:.
Dafna11 [192]

Answer:

RNA (referred to as a ribozyme)

Explanation:

7 0
2 years ago
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. Allele D produce
FinnZ [79.3K]

Answer:

C)Parental: 41% Dr, 41% dR; recombinant: 9% DR, 9% dr.

Explanation:

The notation Dr/dR for genotypes means that one homologous chromosome has the alleles Dr and the other homologous chromosome has the alleles dR.

The heterozygous plant  Dr/dR will produce 4 types of gametes: two identical to the chromosmes the individual has in its somatic cells (called parental), and two gametes which will be a mix of the alleles in the homologous chromosomes (called recombinant).

  • Dr: parental
  • dR: parental
  • DR: recombinant
  • dr: recombinant

To calculate the frequency of each type of gamete, we must use the formula:

Distance (map units) / 100 = frequency of recombination.

18 mu / 100 = 0.18.

The total frequency of recombination between the genes D and R is 0.18, but every time crossing over happens, two recombinant gametes are generated. Therefore, each recombinant gamete will have a frequency of 0.18/2=0.09 = 9%.

The frequency of parental gametes will be:

1 - frequency of recombinant gametes

1 - 0.18 = 0.82

But there are 2 parental gametes, so each of them will have a frequency of 0.82/2=0.41 = 41%.

6 0
2 years ago
In a hydrogen ion pump, the energy is used to join small molecules together to make larger ones. Which factor most likely has th
Dafna1 [17]

Answer:

The amount of energy the flowing H(+) ions have

Explanation:

Hope it helps.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Read the statement.
    9·1 answer
  • The cardiovascular system consists of
    8·1 answer
  • How did hooke’s work contribute to the cell theory?
    6·1 answer
  • what inputs do plants need to carry out photosynthesis and how might you provide these on another planet
    7·2 answers
  • What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons?
    13·1 answer
  • Angiosperms do not need water for fertilization. Why? (3 points) Group of answer choices Flagellated sperm travel to the ovary i
    11·2 answers
  • What land plants produce most of the world's oxygen? Please help fast
    10·1 answer
  • Which statement best explains an environmental outcome of using fossil fuels for energy? (1 point)
    12·1 answer
  • A sample of DNA is collected from an organism. It is analyzed and determined that 20% of the DNA is made up of the base adenine.
    8·1 answer
  • Over the years, land used for grain production in this village has been subjected to aggressive farming practices such as over-w
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!