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
Alex777 [14]
3 years ago
14

Towns and cities require large amounts of energy to meet citizens' needs. This energy is used for items like traffic lights, str

eet lights, and automatic bridges, which keep people safe and allow traffic to flow smoothly. The city leaders of Wrightstown meet to discuss ways to reduce the city's energy use without reducing citizen safety. Which idea will reduce energy usage the most, and have the least effect on citizen safety?
a.Traffic lights will be replaced by traffic cops at every intersection.
b.Street lights will only work on weekdays, and be turned off on weekends.
c.Over time, replace old street lights and traffic lights with solar-powered lights.
d.Replace all traffic lights with stop signs, creating four-way stops at all intersections.
Biology
2 answers:
Advocard [28]3 years ago
8 0
The answer is c Over time, replace old street lights and traffic lights with solar-powered lights.<span>Since traffic lights need to be replaced over time anyway, changing them to solar-powered lights would reduce </span>energy<span> needed to run the city.

</span>
Alexus [3.1K]3 years ago
8 0

The answer is C on USATP

You might be interested in
The earliest hominin that belong to the same genus as modern humans was probably?
77julia77 [94]
The earliest hominin that belonged to the same genus as modern humans was homo habilis.
8 0
3 years ago
Which element do proteins, lipids, and carbohydrates have in common?
earnstyle [38]
The element is carbon
5 0
3 years ago
Coat color in rabbits is under the control of a single gene with
Mashcka [7]

Answer: a) Cch x   Ccch

               b)  Ccch x  Cc

               c)   Cch  x   cchch

               d)  cchc x   chc

Explanation:

<u>Data</u>:

  • Coat color in rabbits is under the control of a single gene with

four alleles: C (full gray color); cch (chinchilla, light gray); ch

(Himalayan, white with black extremities); and c (albino, absence

of pigmentation).

  • The dominance hierarchy is represented as: C >cch > ch > c.

<u>Possible genotypes</u>:

  • <em>For full gray color</em>: CC (Gray), Ccch (Gray-2), Cch (Gray-1), Cc (Gray-3). The allele <em>"C" dominates over the other three alleles</em>, so in every combination where "C" is present, the animal will be fully grayed.
  • <em>For light gray color/Chinchilla</em>: cchcch (Chinchilla), cchch (Chinchilla-1), cchc (Chinchilla-2). The allele <em>"cch" dominates over "ch" and "c"</em>, <em>but not over "C"</em>. So if the allele "C" is combined with "cch", the animal will be fully grayed, but in any other combination with "cch", the animal will be light grayed.
  • <em>For white with black extremities/Himalayan</em>: chch (Hymalayan), chc (Hymalayan-1). The allele <em>"ch" that determines the Himalayan color is only dominant over the allele "c"</em>. But in combination with any other allele, "ch" behaves as a recessive one.
  • <em>For albino</em>: cc. In the presence of any of the other alleles, the allele <em>"c" always behaves as a recessive one.</em> The only possibility of getting an albino animal is if "c" combines with another "c".

<u>Crosses</u>:

a) Gray-1 x gray-2

    3/4 gray : 1/4 chinchilla

   

   Parental)       C ch        x        C cch

   Gamates)     C        ch           C         cch

Punnet Square)              C              cch

                           C        <em>CC</em>           <em>Ccch</em>

                           ch       <em>Cch</em>         <em>cchch</em>

F1 Genotype)    1/4  <em>CC</em>  

                          1/4 <em>Cch</em>

                          1/4 <em>Ccch</em>

                          1/4 <em>cchch</em>

F1 Phenotype)   3/4 Fully Gray animals (CC, Cch, Ccch)

                          1/4 Chinchilla animals (cchch)

b) Gray-2 x gray-3

    3/4 gray : 1/4 chinchilla

 

Parental)          C cch      x     C c

   Gamates)    C    cch           C    c

Punnet Square)            C              cch

                           C      <em>CC            Ccch</em>

                           c       <em>Cc            cchc</em>

F1 Genotype)    1/4  <em>CC</em>  

                         1/4 <em>Cc</em>

                         1/4 <em>Ccch</em>

                          1/4 <em>cchc</em>

F1 Phenotype) 3/4 Fully Gray animals (CC, Cc, Ccch)

                        1/4 Chinchilla animals (cchc)

c) Gray-1 x chinchilla-1

    1/2 gray : 1/4 chinchilla : 1/4 himalayan

Parental)           C ch        x        cchch

   Gamates)    C        ch           cch         ch

Punnet Square)           C              ch

                          cch    <em> Ccch       cchch</em>

                             ch      <em> Cch         cchch</em>

F1 Genotype)    1/4  <em>Ccch  </em>

                              1/4 <em>Cch</em>

                              1/4 <em>cchch</em>

                              1/4 <em>chch</em>

F1 Phenotype) 2/4=1/2 Fully Gray animals (Ccch, Cch)

                             1/4 Chinchilla animals (cchch)

                             1/4 Himalayan animals (chch)

d) Chinchilla-2 x himalayan

   1/2 chinchilla : 1/4 himalayan : 1/4 albino

Parental)          cchc        x         chc

   Gamates)    cch      c            ch        c

Punnet Square)           cch              c

                           ch      <em> cchch          chc</em>

                             c        <em>cchc            cc</em>

F1 Genotype)    1/4  cchch  

                         1/4 cchc

                          1/4 chc

                          1/4 cc

F1 Phenotype) 2/4=1/2 Chinchilla animals (cchch, cchc)

                             1/4 Himalayan animals (chc)

                             1/4  Albino animals (cc)

6 0
3 years ago
Is the blue whale known as a fish?
UNO [17]
Blue whales<span> are the largest animals ever known to have lived on Earth. These magnificent marine mammals rule the oceans at up to 100 feet (30 meters) long and upwards of 200 tons (181 metric tons). Their tongues alone can weigh as much as an elephant. There are mammals hope this helps you</span>
4 0
3 years ago
Read 2 more answers
A primary active transport process is one in which __________.?
QveST [7]
A primary active transport process is one in which <span>molecules move through transport proteins that have been activated by ATP. 
</span><span>Primary active transporters, such as the sodium-potassium ATPase (or pump), are activated when ATP is hydrolyzed. This activation allows for the transport of solutes across the plasma membrane against concentration gradients.</span>
4 0
3 years ago
Other questions:
  • What does the changing the pH of a solution affect the ability of an enzyme to catalyze a chemical reaction?
    13·1 answer
  • Why will these changes make it more difficult for the plants to grow?
    8·1 answer
  • What is the probability that their first child will also be homozygous dominant for curly hair?
    6·1 answer
  • Carbon dioxide is the primary anthropogenic radiative forcing.
    9·1 answer
  • Which of the following is not a way humans have directly impacted coral reefs? a. overfishing b. tourism c. algae farming d. agr
    11·2 answers
  • Explain Why DNA must be copied during interphase before cell division can occur?
    6·1 answer
  • How many total daughter cells are produced when one cell undergoes meiosis? A. 8 B. 4 C. It depends on the organism. D. 2
    8·1 answer
  • 1. Which of the following can be considered fomites: A. Door handle, soap dispenser, a dog infected with rabies virus B. Pencils
    12·1 answer
  • Bacterial cells have been treated with a drug that stops a dividing cell. Which of the following processes would not be necessar
    8·1 answer
  • How are displacement distance velocity speed all the same with each other
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!