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
levacccp [35]
3 years ago
10

A population of laboratory rats in Hardy-Weinberg equilibrium displays a polymorphism for coat color controlled by two alleles a

t a single locus. The B allele codes for black coat colour and is completely dominant. There are 200 rats in the population: 32 are white and 168 are black. How many of the black rats are heterozygous (Bb) at the coat-color locus?
Biology
1 answer:
andreev551 [17]3 years ago
5 0

Answer:

96

Explanation:

In solving Hardy-Weinberg related question, there are two formulas involved:

p + q = 1   ----------------------------- equation (1)

p² + 2pq + q² = 1 ------------------- equation (2)

where;

p is the frequency of the dominant allele.

q  is the frequency of the recessive allele.

p² is the frequency of individuals with the homozygous dominant genotype.

2pq is the frequency of individuals with the heterozygous genotype.

q² is the frequency of individuals with the homozygous recessive genotype.  

Total population of rats = 200

32 are white (bb)  = q²

168 are black (BB)  = p²

How many of the black rats are heterozygous (Bb) at the coat-color locus?

Frequency of individual (q²) = \frac{Individuals}{Total population}

Frequency of individual  (q²) = \frac{32}{200}

q² = 0.16

To find q from q²; we take the square root of the both sides

√q² = √0.16

q = 0.4

Using the first equation;

p + q = 1

p + 0.4 = 1

p = 1 - 0.4

p = 0.6

To find how many of the black rats are heterozygous (Bb) at the coat-color locus (i.e 2pq) ; we have

= 2 × p × q

= 2 × 0.6 × 0.4

= 0.48

∴ 0.48 × Total population of rats

= 0.48 × 200

= 96

Hence, there are 96 black rats that are heterozygous (Bb) at the coat-color locus

You might be interested in
What is the function of the following in translation? TAC CGT TCT GCT AAA TAT ACC ACT
wolverine [178]
<span>AUD GCA AGA CGA UUU AUA UGG UGA hope i helped good luck</span>
8 0
3 years ago
the following is a diagram of three different types of cellular transport. Which of the following is accurate regarding the diag
skad [1K]

Answer:

hey there is no diagram you were supposed to attach it with a document

7 0
2 years ago
What is the definition of endocytosis
Kruka [31]

The meaning is, "the taking in of matter by a living cell by invagination of its membrane to form a vacuole."

8 0
3 years ago
Read 2 more answers
Enzymes that work in the stomach must adjust to the unique environment by being able to
ValentinkaMS [17]

Answer:

D im pretty sure

Explanation:

4 0
3 years ago
True or false? both lungs are divided into two lobes.
irina [24]
The right lung<span> has </span>both<span> more </span>lobes<span> and segments than the left. It is </span>divided into <span>three </span>lobes<span>, an upper, middle, and a lower, by </span>two<span> fissures, one oblique and one horizontal. The upper, horizontal fissure, separates the upper from the middle </span>lobe<span>.</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which grouping consist of connecting fibers that enable the cell function as a unit
    10·2 answers
  • "what percentage of primary energy is used for transportation in developing countries"
    9·1 answer
  • 100 POINTS!!!!!!!!!
    15·2 answers
  • To learn about human interactions with and views on the environment over time, which discipline would you likely study? a. ecolo
    7·1 answer
  • Why do wetlands have a rich supply of nutrients?
    13·1 answer
  • Tallness (T) in snapdragons is dominant to dwarfness (t), and red (R) flower color is dominant to white (r). The heterozygous co
    8·1 answer
  • Where did the Parliament offer leadership to assert its authority during the Glorious Revolution of 1688?
    9·2 answers
  • Which of the following changes would most likely result from the loss of the white clam population from this ecosystem?​
    13·1 answer
  • What is the outcome of cell signaling
    8·1 answer
  • True or False. The source of all clouds and precipitation is water vapor.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!