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
kap26 [50]
3 years ago
6

If the ability to roll one’s tongue is dominant (R) and the inability to roll one’s tongue is recessive (r), what would the geno

type be for someone who can not roll their tongue?
Biology
2 answers:
mina [271]3 years ago
8 0

Answer: The correct answer is-

Genotype for someone who can not roll their tongue would be 'rr'.

As per the information given in the question, ability of rolling tongue is a dominant trait (depicted by capital letter allele R) and inability to roll is a recessive trait (depicted by small letter allele r).

Dominant trait is the one that masks the expression of the recessive trait.

The only possible genotype for the recessive trait would be rr (homozygous recessive).

As 'Rr' and 'RR' will exhibit the genotype for dominant trait due to the presence of dominant allele 'R' (rolling of tongue).

Thus, 'rr' is the right answer.

kakasveta [241]3 years ago
6 0
Rr because if the dominant trait is their it will show
You might be interested in
What is the main idea?
Fynjy0 [20]

Answer:

the second one

Explanation:

4 0
2 years ago
Read 2 more answers
An elderly client newly diagnosed with systolic hypertension asks her health care provider why this happens. which response is m
Roman55 [17]
The response that is most accurate is that; with age, your arteries lose their elasticity and are replaced with collagen, which makes your arteries stiffer. Systolic hypertension or pressure is an elevated systolic blood pressure. If the systolic blood pressure is elevated (above 140) with a normal (<90) diastolic blood pressure, it is called the isolated systolic hypertension. 
3 0
2 years ago
Why is it inportant to the mouth and stomach are near the start of the digestive system
Serjik [45]
Because the mouth breaks down the food and the stomach uses acid to break food down even more...
6 0
3 years ago
Someone Plz Help me :)
Sati [7]

Answer:

part a

A= Tt

B=tt

part b

offspring a

genotype= TT&Tt, phenotype=tongue rolling

offspring b

genotype=Tt phenotype= tongue rolling & genotype tt phenotype= unable to roll tongue

4 0
2 years ago
Does the distribution of bases in sea urchin DNA and salmon DNA follow Chargaff’s rules? a) Yes, because the %A approximately eq
MArishka [77]

Answer:

A. Yes, because the %A approximately equals the %T and the %G approximately equals the %C in both species.

Explanation:

According to Chargaff's rule, in all cellular DNAs, the number of adenosine residues (A) is equal to the number of thymidine residues (T). And the number of guanosine residues (G) is equal to the number of cytidine residues (C). Therefore, the sum of the purine residues equals the sum of the pyrimidine residues (A+ G= C+ T). It is based on the fact that a purine base always pairs with a pyrimidine base in a double helix DNA.

Chargaff’s rule is followed in all the double-helical DNA molecules irrespective of the species. In DNAs of sea urchin and salmon, the percentage of adenine is equal to that of the thymine and the percentage of guanine is equal to that of the cytosine. Therefore, Chargaff's rule is followed.

3 0
3 years ago
Other questions:
  • Sediment spreads horizontality and it goes from youngest on top to oldest on bottom. When sediment deposits in water, it also sp
    5·2 answers
  • What are the structures of the lymphatic system?
    14·2 answers
  • Which is a result of a seasonal change (meaning a change that happens over
    6·1 answer
  • What is chlorophyll, and what is it responsible for
    11·1 answer
  • Anyone wanna help me out with these questions word box at the top.
    9·1 answer
  • Explain how dominant and recessive alleles for the trait of height determine if a pea plan will be tall or short.
    11·1 answer
  • Can Campus and Mountain Juncos become different species?
    6·1 answer
  • What are some factors that affect how much biodiversity an area has?<br> Hurry pls :)
    13·1 answer
  • Gradual variation, as in human skin color, is an example of what?
    15·1 answer
  • How do scientists classify species?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!