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lianna [129]
2 years ago
9

Help needed ASAP please help

Biology
1 answer:
olga55 [171]2 years ago
7 0
DD in top left Dd in top right dd in bottom right 75% dimples and 25% no dimples
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An antibiotic was effective 20 years ago against a specific type of a specific type of bacterial infection no longer works again
Sliva [168]

c. Resistant bacteria have survived and reproduced at a greater rate than nonresistant bacteria

Explanation:

The antibiotic is no longer effective as it was 20 years ago because the resistant bacterial have survived and reproduced at a greater rate than the non-resistant bacteria.

  • The antibiotics have specifically designed to exterminate the disease causing bacteria strain from the body.
  • While at that point in time, it is potent and does the work. Along the line, it will cause the structures of some other strains to change.
  • This will lead to the development of resistant breeds with time.
  • The resistant breed will then be able to survive the onslaught of the antibiotics making it not a good fit.

Learn more:

Selective force brainly.com/question/4602376

#learnwithBrainly

4 0
3 years ago
If the inner lining of the air sacs is neither thin nor highly vascularized, then what can be inferred about the ai
MArishka [77]
If the inner lining of the air sacs neither thin nor highly vascularized, then it can be inferred that AIR SACS ARE CANNOT BE THE SITES OF GASEOUS EXCHANGE BETWEEN AIR AND BLOOD. Air sacs are generally lined with mucus and surrounded with blood capillaries.
In case of birds, air sacs play an important role in respiratory system.
4 0
3 years ago
What is an observation? What do you use to make an observation?
4vir4ik [10]

Answer: we can make observations directly by seeing, feeling, hearing, and smelling, but we can also extend and refine our basic senses with tools: thermometers, microscopes, telescopes, radar, radiation sensors, X-ray crystallography, mass spectroscopy, etc. And these tools do a better job of observing than we can!

3 0
2 years ago
Which of these provides evidence of the common ancestry of all life?
schepotkina [342]

Answer:d

Explanation:

5 0
3 years ago
In dogs, genes A and B are required for scent.Individuals homozygous for either one or both of the nonfunctional recessive allel
andrew11 [14]

Answer:

6/16 dogs will not be able to smell.

Explanation:

Genes A and B are considered for scent smell.

Individuals homozygous for either one or both of the nonfunctional recessive alleles are not able to smell.

The final cross would be AaBb x AaBb which has outcome of;

Individual with homozygous nonfunctional recessive alleles (bold ones):

  • One nonfunctional recessive alleles: Aabb, aaBB, aaBb, Aabb, aaBb (5/16)
  • Two nonfunctional recessive alleles: aabb (1/16)
  • All nonfunctional recessive alleles: 6/16 dogs that could not smell scents
5 0
3 years ago
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