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
PilotLPTM [1.2K]
3 years ago
5

The allele for the ability to roll one's tongue is dominant over the allele for the lack of this ability. in a population of 500

individuals, 25 percent show the recessive phenotype. how many individuals would you expect to be homozygous dominant and heterozygous for this trait
Biology
1 answer:
zlopas [31]3 years ago
7 0

Answer:

25% ;  50%

Explanation:

Assuming the dominant allele for the rolling tongue is P, then the recessive allele will be p.

The population unable to roll their tongue will be recessive dominant pp = 25% = 0.25

To find the frequency of the p allele then = (square root of 0.25) = 0.5

Remember the Hardy Weinberg equation of p + q = 1 & p² +2pq + q² = 1

Therefore P = 1 – 0.5 = 0.5

Homozygous dominant individuals will be P*P = 0.5*0.5 = 0.25 * 100 = 25%

Heterozygous individuals will be 2*P*p= 2*0.5 *0.5 = 0.5 * 100 = 50%

You might be interested in
The process of a white blood cell engulfing a bacterium is
Liula [17]
The process of a white blood cell engulfing a bacterium is phagocytosis.
3 0
3 years ago
A colorimeter is an instrument used for chemical analysis by comparing a liquid’s color with standard colors. In an experiment,
klio [65]
The first colorimeter is precise, but it is not accurate. It seems to have a zero error of -5.
We can conclude its precision because the readings are closely grouped, but its lack of accuracy is due to its variation from the actual value. Moreover, the variation is consistently of 5 points lower than the actual value, so its zero error may be -5.

The second colorimeter may be referred to as being accurate.
8 0
3 years ago
Read 2 more answers
A nerve is actually a long threadlike bundle of ________ that conduct electrical impulses.
KonstantinChe [14]

A nerve is actually a long threadlike bundle of dendrites that conduct electrical impulses.

<span>Dendrite word derived from the Greek word ‘dendron’ which means tree. They carry messages in the form of electrical impulses to cell body, there are also wire like nerves called axon. Sensory nerves and motor nerves are common types of nerves.</span>

7 0
3 years ago
Which of these activities increases the amount of carbon in the atmosphere?
TEA [102]

Answer:

B.

burning of fossil fuels

it increase the amount of carbon present in atmosphere.

4 0
2 years ago
Read 2 more answers
The expression of two different alleles simultaneously in the heterozygote is called
galina1969 [7]
Genotype or Phenotype relationships

6 0
3 years ago
Other questions:
  • Living organisms break down polysaccharides into what?
    5·2 answers
  • Which occurs directly before forming a hypothesis?
    7·1 answer
  • How do you see plants lose water and how do they provide too much water from being lost
    11·1 answer
  • Use the drop-down menus to label the parts of a<br> nucleotide.<br> Label A
    6·1 answer
  • Which gas prevents damaging ultraviolet radiation from the sun from reaching Earth's surface?
    15·2 answers
  • I need help with this please!
    12·1 answer
  • Preparation for genome are made in which phase​
    11·1 answer
  • The principles of probability can be used to
    12·1 answer
  • A muscle that opposes or reverses a particular movement is a.
    6·1 answer
  • What is the best name for this molecule?<br> maltose<br> sucrose<br> fructose<br> glucose
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!