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bearhunter [10]
3 years ago
6

Polio viruses contain DNA. The viruses in the polio vaccine have DNA in which the base sequence has several differences from the

base sequence in the normal polio virus. Suggest how this makes them unable to reproduce in the human body.
Biology
1 answer:
Radda [10]3 years ago
3 0

Answer:

The polio strains cannot reproduce because they are weakened.

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The random movement of molecules is referred to as_____
Savatey [412]
The answer to your question is A., as the random movement is a movement
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3 years ago
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The table below summarizes Mendel’s results for the F2 generation. Mendel’s Results Plant height 787 tall 277 short Flower color
Gnom [1K]

Answer:

2001

Explanation:

This question showcases a table that displays Mendel's results (figures) when he crossed pea plants and observed different characters in the plant. Mendel worked with different phenotypic characteristics in the pea plant.

According to the table, the result were for seven characteristics including height, flower color, flower position, pod color, pod shape, seed color, seed shape. Based on the observation of the number of F2 offsprings that possessed dominant trait and recessive trait for each character, we will notice that it follows an approximate phenotypic ratio of 3:1

1. Plant height 787 tall 277 short (3:1)

2. Flower color 705 purple 224 white (3:1)

3. Flower position 651 middle of stem 207 end of stem (3:1)

4. Pod color 428 green 152 yellow (3:1)

5. Pod shape 882 inflated 299 constricted (3:1)

6. Seed color 6,022 yellow X green

7. Seed shape 5,474 smooth 1,850 wrinkled (3:1)

This 3 dominant : 1 recessive ratio is the ratio got in the F2 offsprings when he observed the seven characteristics in pea plants. Hence, the seed color will also follow the same 3:1 ratio

Therefore, 2001 is the result Mendel obtained in the F2 offsprings for the recessive trait of seed color characteristics in his experiment, which actually depicts the 3:1 ratio. Hence, X (green seed color) is 2001

8 0
3 years ago
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Indicate whether the following statements about genetically modified foods are true or false. Genetically modified foods are res
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Genetically  modified foods are  resistant  to  insents  and  plant  viruses  -  TRUE

Genetically   modified  foods  are  yet  available to  consumers at  the  grocery  store    -false

genetically  modified  foods  have  delayed  fruit  ripening  for  shell  life  during  transportation  -TRUE

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When using a dichotomous key, it is important to always
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Answer: answer is C

Explanation:

7 0
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An experiment was conducted by Diane Dodd in which a single population of fruit flies was divided into two, with one of the popu
BARSIC [14]

Answer: Allopatric Speciation

Explanation:

Allopatric speciation occurs when new distinct species are formed due to the separation of a specie into two separate groups. These two groups are kept away from each other.

In allopatric speciation there is no exchange of genes between the two separate groups.

Allopatric speciation can also be known as geographical speciation.

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