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
Gnoma [55]
3 years ago
10

Suppose that in humans the ability to roll the tongue (R) is dominant to being unable to roll it (r), and having freckles (F) is

dominant to having no freckles (f). If a woman heterozygous for both traits married a man with no freckles who couldn't roll his tongue, what is the probability that they would have a freckled, tongue-rolling child?
Biology
1 answer:
tatuchka [14]3 years ago
4 0

Answer:

1/4

Explanation:

A heterozygous woman for both traits (RrFf) marries with a man with no freckles (ff) who can't roll his tongue (rr).

The cross is: RrFf X rrff.

The woman can produce the gametes <em>RF, Rf, rF </em>and <em>rf</em>

The man can only produce <em>rf </em>gametes.

<u>The possible offspring that can arise from the combination of those gametes is:</u>

  • 1/4 RrFf Freckled, tongue-rolling
  • 1/4 Rrff Freckled, unable to roll tongue
  • 1/4 rrFf Not freckled, tongue-rolling
  • 1/4 rrff Not freckled, unable to roll tongue
You might be interested in
What are nutria and zebra mussels examples of?
Arturiano [62]
B. invasive species nutria have token over a lot of Florida ponds/waterways
5 0
3 years ago
Prior to mitosis and after s phase, each chromosome of a eukaryotic cell consists of a pair of identical structures called
dexar [7]
Hello!

I believe the correct answer to your question would be sister chromatids.

Hope this helps, and have a lovely rest of your day :)
3 0
3 years ago
In response to a harmful stimulus, ________ initiate neural impulses leading to the sensation of pain.
alekssr [168]
<span>In response to harmful stimulus, nociceptors initiate neural impulses leading to sensation of pain. Nociceptors are receptors located at the end of a sensory neuron's axon. They respond to potentially damaging things by sending a signal to the spinal cord and brain that lets it know that there is a possible thread. If the brain believes the threat is real it will create a painful sensation at the body part in danger to alert the body and save itself from the threat.</span>
5 0
3 years ago
Nervous control of gastric secretion is provided by ________.
lakkis [162]

Options for the question have not been provided. They are as follows:

A) somatic neurons in the spinal cord

B) the reticulospinal and vestibulospinal tracts

C) the vagus nerve and enteric plexus

D) the rubrospinal tracts

Answer:

C) the vagus nerve and enteric plexus

Explanation:

Enteric plexus or enteric nervous system is a part of autonomic nervous system and controls the gastrointenstinal (GI) tract. Vagus nerve is tenth cranial nerve and it innervates the enteric plexus. Both work together to control various functions of GI tract like peristalsis and gastric secretion. They release Gastrin-releasing peptide due to which the G cells of stomach are stimulated secrete gastrin. Gastrin in turn stimulates parietal cells of stomach to secrete gastric juice.

8 0
3 years ago
Is the ability of an organism to change internally or externally in relation to its environment.
katrin2010 [14]
I think its Adaptation
3 0
4 years ago
Other questions:
  • If you were to use an adult cell’s nucleus with intact DNA from a Tasmanian tiger to replace the nucleus of a Tasmanian devil’s
    10·1 answer
  • Taenia saginata/Taenia solium are commonly known as tapeworms. true or false
    6·1 answer
  • Why is it important to classify in the millions of species on earth
    15·1 answer
  • The pH of a solution is determined to be 2.5. The solution is
    6·1 answer
  • Cross-contamination is the transfer of harmful organisms from one food item to another. true false
    8·1 answer
  • Which best describes the lysogenic cycle?
    10·2 answers
  • Electronegativity can be used to predict the character of a bond between two elements. If the difference between the electroneg
    10·1 answer
  • A thermophile is prokaryotic and unicellular. Which kingdom does it belong in?
    15·2 answers
  • Choose any adaptation found in the desert (hot or cold). Describe how it helps the organism survive and/or reproduce in that bio
    14·1 answer
  • When was DNA discovered?<br> 1927<br> 1953<br> 1957<br> 1980
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!