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
valentinak56 [21]
3 years ago
14

(will give brainiest if right) Peppered moths are dark colored when they carry the dominant (D) allele and light colored when th

ey are homozygous for the recessive (d) allele. A population of peppered moths was determined to produce eggs and sperm with the following allele frequencies: 0.15 (D) and 0.85 (d).
What are the genotype frequencies in the offspring of this population? Assume the conditions of Hardy-Weinberg equilibrium apply.

A. DD = 0.0625; Dd = 0.375; dd = 0.5625
B. DD = 0.375; Dd = 0.0625; dd = 0.5625
C. DD = 0.25; Dd = 0.50; dd = 0.25
D. DD = 0.0225; Dd = 0.255; dd = 0.7225
Biology
1 answer:
kaheart [24]3 years ago
7 0

D. DD = 0.0225; Dd = 0.1275; dd = 0.7225

The value of Dd is different in question.

<u>Explanation:</u>

Given -

Dark colored = DD, Dd

light colored = dd

Frequency of allele D = 0.15

Frequency of allele d = 0.85

Hardy-Weinberg equilibrium is applied.

DD = 0.15 X 0.15 = 0.0225

Dd = 0.15 X 0.85 = 0.1275

dd = 0.85 X 0.85 = 0.7225

Therefore, DD = 0.0225; Dd = 0.1275; dd = 0.7225

You might be interested in
How could the botanist best determine whether the genotype of the green-pod plant is homozygous or heterozygous?
murzikaleks [220]

Answer:

C

Explanation:

Homozygosity is when the two alleles (gene form) are the same while heterozygosity is when the alleles are of different types.

In a gene, an allele is capable of masking the expression of another. The allele being expressed or that masks is called the DOMINANT allele while the allele being masked is the RECESSIVE allele.

A recessive allele will only be expressed (phenotypically) if the two alleles are of the same type i.e. homologous but when a dominant phenotype is expressed, one cannot ascertain whether the organism is heterozygous or homozygous for that gene. e.g T is the gene coding for height in plant, T which represents tallness is dominant over t, representing shortness. In a heterozygous (Tt) and homozygous dominant (TT) state, the plant will be phenotypically tall but will only be short in a homozygous recessive (tt) state.

Since the plant will be tall in homozygous (TT) or heterozygous (Tt), we cannot detect the actual genotype of the plant. Hence, a test cross is done.

A test cross is a cross between a dominant phenotype and a homozygous recessive in order to determine the actual genotype of the dominant organism i.e. whether homozygous or heterozygous.

In this case involving pod color gene, since the botanist is trying to determine whether the genotype of the green pod plant is heterozygous or homozygous, it means the allele for green pod is dominant over that of yellow pod (recessive).

N.B: The recessive trait can only be expressed if it is homozygous. Therefore, the yellow pod plant has homozygous recessive genotype.

A test cross is conducted by the botanist to determine whether the green pod plant is heterozygous or homozygous by crossing it with a yellow pod plant (homozygous recessive).

If any of the offspring plants exhibit recessive traits i.e. yellow pods, it means the parent green pod plant is heterozygous but if all the offspring plants show phenotypic dominant traits i.e green pod, it means the parent green pod plant is homozygous.

8 0
3 years ago
3. Describe how the nervous system helps different parts of your body communicate with one another the moment you begin to pet a
Brilliant_brown [7]

Answer:

When petting a dog, mechanoreceptors in the skin of your hand send signals to the sensory neuron. The sensory neuron connects to your spinal cord and through your brain.

Explanation:

5 0
1 year ago
How is Pluto more like Quaoar and Sedna than it is like Neptune ?
IgorLugansk [536]

Answer:

Pluto is big enough to be considered a dwarf planet, but it has not been classified as such in some peoples views such as Quaoar and Sedna.

Explanation:

The both reach the otter layers of the solar system just like Pluto and are as I said above big but not big enough to be considered a dwarf planet

7 0
3 years ago
Read 2 more answers
nitrogen gas reacts with hydrogen gas to form ammonia. what are the reactants in the chemical reaction
gtnhenbr [62]
Nitrogen and hydrogen
N2 +3 H2 ---> 2NH3
hope that answers the question:)
7 0
3 years ago
Read 2 more answers
Wernicke's area is associated with a. reflex centers for controlling heartbeat. b. sexual arousal. c. the ability to ride a bike
olga2289 [7]
E- the ability to speak
3 0
3 years ago
Other questions:
  • Why is the microscope important to the study of microlife?
    9·1 answer
  • Explain how a plant obtains usable energy through the process of photosynthesis.
    7·1 answer
  • PLS HELP SOMEONE PLS!!!! 99 POINTS!
    7·1 answer
  • Which is not a role of the cystic fibrosis transmembrane conductance regulator (CFTR)? A Option A: conductor of bicarbonate ions
    6·1 answer
  • I'm a newbie here an I have a question based on biology . Does all plants converts oxygen to carbon dioxide​
    11·2 answers
  • A green plant absorbs a toxic substance that completely blocks the
    10·1 answer
  • Compare and contrast the structure and function of DNA and RNA.
    12·1 answer
  • 4.Which part of the carnation plant helps absorb water from the
    15·2 answers
  • Which of the following best describes a suspension?
    11·2 answers
  • Answer Under 20-30 minutes and I give a brainiest!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!