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
AlexFokin [52]
3 years ago
9

To map genes of a bacterial strain, conjugation must be interrupted at given times. Suppose you have Hfr cells of genotype a+b+c

+d+e+strS and F- cells of genotype a-b-c-d-e-strR and you combine these two cultures in liquid medium in four blenders at time 0. After intervals of 3, 6, 9, and 12 minutes, you turn on successive blenders.The resulting cultures were then plated on medium containing streptomycin. Why?A) to eliminate non-conjugated F- cellsB) to eliminate the Hfr cellsC) to selectively eliminate cells that have taken in F+ genesD) to eliminate all non-conjugated cells
Biology
1 answer:
OLEGan [10]3 years ago
6 0

Answer:

The answer is not in any of the options and is the following:

to eliminate any remaining Hfr cells.

Explanation:

In a medium that has a streptomycin antibiotic it is used to kill Hfr donor cells after the conjugation is interrupted. This is entirely due to the streptomycin sensitivity allele (str-s) which are found in Hfr strains. The presence of the streptomycin resistance allele, located in the receptor, is used for the specific destruction of Hfr donor cells after conjugation occurs.

You might be interested in
Are hydrangeas Monocots or Dicots?
OlgaM077 [116]
 The answer is Dicots.
7 0
3 years ago
Read 2 more answers
Which statement accurately describes the function of a hormone produced by the adrenal glands?
stealth61 [152]
<span>The question says,'which statement accurately describe the function of a hormone produced by the adrenal glands? The correct option is C. Cortisol produced by the adrnal gland is called the stress hormone because it coordinates many change that occur in the body in response to stress. This include control of heart rate and blood pressure.</span><span />
8 0
3 years ago
What molecule contains the most energy ?
Komok [63]

Answer:ATP

Adenosine 5'-triphosphate, or ATP, is the most abundant energy carrier molecule in cells. This molecule is made of a nitrogen base (adenine), a ribose sugar, and three phosphate groups. The word adenosine refers to the adenine plus the ribose sugar.

Explanation:

6 0
3 years ago
Deer ticks are responsible for spreading Lyme
uysha [10]
<span>(3) parasite. Parasites are organisms that live on other organisms and cause harm to them.</span>
4 0
3 years ago
Read 2 more answers
Target
Bond [772]

Answer:

catalyst

Explanation:

only one make sense

Brainliest pls pls pls

3 0
3 years ago
Other questions:
  • The most massive part of the atom is(are) the _____ which has(have) a _____ charge.
    15·1 answer
  • Which of the following fits the definition of a public good
    8·1 answer
  • What role does hypothalamus play to regulate the body temperature?
    6·1 answer
  • Humans can use many methods to reduce their impact on the environment. Match each method below with an example.
    11·2 answers
  • Which of the following is NOT a function of the kidneys? Which of the following is NOT a function of the kidneys? carry out gluc
    11·1 answer
  • The function of the urethra is to filters urea out of the bloodstream.<br><br> True<br> Or<br> False
    14·2 answers
  • Which phase of mitosis is where two nuclear membranes are formed?
    14·1 answer
  • Describe what happens to organisms who optimum temperature zone is between 21°C and 32°C when the temperature rises from 21°C to
    9·1 answer
  • Many plants produce seeds which have small hooks on them. These hooks will attach to animals as they move past the plants. What
    7·1 answer
  • Ucx/fnfp/nay can clear doubrs physics ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!