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
PIT_PIT [208]
3 years ago
8

Having freckles (F) is dominant over not having freckles (f). A parent with freckles is crossed with a parent without freckles.

The Punnett square shows the possible genotypes of the offspring.
What is the probability that an offspring will have a homozygous dominant genotype?
%

What is the probability that an offspring will have a heterozygous genotype?
%

What is the probability that an offspring will have a homozygous recessive genotype?
%

Biology
2 answers:
Step2247 [10]3 years ago
8 0

Answer:

This is a trick question, and only because the question is vague

Explanation:

Use a Punnet Square to figure out the percentages.

If the parent with freckles (let's just call them Parent A) is homozygous dominant, their genotype would be FF.  The parent without freckles (Parent B) has a genotype of ff.

In any situation, the probability of these two having a child that is homozygous dominant for freckles is 0%.  (see punnet squares for more info).  

Now here's where it gets a little more confusing because the question is kind of vague on this.

Assuming that Parent A is homozygous dominant (both genes for this are dominant (FF)), then the probability of having a heterozygous (non-identical genotype letters, meaning they carry the recessive trait) genotype is 100%.  However, if Parent A is also heterozygous, then that percentage decreases to 50%

For Situation A (Parent A is homozygous dominant), the probability of a homozygous recessive genotype is 0%

For Situation B (Parent A is heterozygous dominant), the probability of a homozygous recessive child is 50%.

Please see the Punnet square I made for more information.

Key:

- Homozygous Dominant: FF

- Heterozygous Dominant: Ff

- Homozygous Recessive: ff

(heterozygous recessive does not exist, because that would mean one of the genes is dominant, which would overpower the recessive gene)

I really hope this helps, and if you're confused by this, please do not hesitate to let me know!

Ray Of Light [21]3 years ago
6 0

Answer: keep it simple down there this the answer:

0%

50%

50%

Explanation:

You might be interested in
What embryo-produced hormone maintains progesterone and estrogen secretion by the corpus luteum through the first trimester of p
7nadin3 [17]

Answer:

Human chorionic gonadotropin

Explanation:

Human chorionic gonadotropin is a hormone produced after the implementation with the function to promote the maintenance of the corpus luteum during the beginning of pregnancy. This is important because hormones produced by corpus luteum, such as progesterone enrich the uterus with f blood vessels so that it can sustain the growing fetus.

Human chorionic gonadotropin is often used in pregnancy tests, since its presence indicates pregnancy.

6 0
3 years ago
What of matter are always moving <br><br> True <br> Or<br> False
Svetlanka [38]

Answer: True?

Explanation: The wording of the question is confusing?

7 0
3 years ago
The proximal end of the radius illustrates the relationship of form and function. The cup-like surface of the radial head articu
aleksklad [387]
<h2>The Forearm</h2>

Explanation:

The proximal end of the radius illustrates the relationship of form and function. The cup-like surface of the radial head articulates with the rounded shape of the capitulum. This forms a joint that allows for movement of elbows and forearms.

Radius and ulna are the two bones of the forearm.  Their proximal ends articulate and fit into the cup like end of the humerus. This forms a synovial joint called the elbow joint.  The movement of this joint allows the forearms to supinate and pronate.

5 0
3 years ago
Plant and animal cells are eukaryotic cells because they have which organelle?
mylen [45]

Answer:

Eukaryotic cells, like plant and animal cells, have membrane-bound organelles like the <u>nucleus and mitochondria.</u>

Explanation:

3 0
2 years ago
The parietal cells of the stomach secrete ______________, while the chief cells secrete ______________.
babunello [35]

Explanation:

The two main types of exocrine secretory cells of the stomach are parietal cells and chief cells. Parietal cells secrete hydrochloric acid and chief cells secrete digestive enzymes such as pepsin

7 0
2 years ago
Other questions:
  • NEED ASAP! Investigators are trying to determine the time of death for a corpse. Which factor would not be important in determin
    7·1 answer
  • Why are olfaction and gustation called chemical senses? Neither one has sensory receptors that respond to molecules in the food
    6·1 answer
  • Name the three types of blood cells?
    5·2 answers
  • Which individual is shown in karyotype
    13·1 answer
  • In which structure <br> is fertilization occurring
    6·1 answer
  • WHAT MOST DIRECTLY ALLOWS PLANKTON TO GROW?
    5·2 answers
  • - Which of the following would lead to a cooling of our climate?
    10·1 answer
  • The study of chemical reactions in cells is useful in the analysis of metabolism. What is metabolism?
    6·1 answer
  • What did Madame CJ Walker create that helped her achieve success?
    5·2 answers
  • How will relative humidity relate to the temperature of the wet bulb thermometer
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!