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3 years ago

Which of the following statements DOES NOT accurately describe the experimental design used by Fred Griffith?

Biology

1 answer:

love history [14]3 years ago

8 0

Answer:

The correct answer is B. It is false that the injection of the live rough bacteria into the mouse is a control because it was used as a standard of comparison for other experimental setups.

Explanation:

The experiment conducted by Frederick Griffith in 1928 was one of the first experiments to show that bacteria could transfer genetic information.

Griffith used two slightly different pneumococcal strains in his experiment. One of them was harmless to the mice, while the other was not. Using each strain separately, the logical thing happened: the mice died with the fatal strain, and nothing happened with the harmless.

Then, Griffith killed the deadly strain, and mixed both strains, introducing them into the mice. After this, the mice died, which allowed us to verify that the bacteria can transfer genetic material even after dying, through the transformation process.

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Complete the following Punnett square showing the genotypes produced from crossing agouti with a chinchilla with the following a

Ostrovityanka [42]

Answer:

Now there we go! That's the complete question. But anyway, here's your answer:

C C

A AC AC

Basically, what this Punnett Square means is that all of the offsprings will be Agouti, due to Agouti being the dominant trait. However, the genotype of the offsprings will be heterozygous since all offsprings also carry the allele C as well.

Explanation:

8 0

3 years ago

a circle fence sourrounding a small yard mesure 84 meters in length if you walk from one side from the other through the middle

anygoal [31]

Answer: 26.75 meters.

2πr = 84

2 * 3.14 * radius = 84

radius = 84/6.28

r= 13.375

So the diameter will be 13.375 + 13.375 which is 26.75 meters.

4 0

2 years ago

In a standard monohybrid cross between purple-flowered and white-flowered peas, what fraction of the purple-flowered peas in the

Advocard [28]

Answer:

1/3

Explanation:

<em>A standard monohybrid cross is a cross that follows the dominance/recessive pattern from Mendel's experiment.</em>

It means the purple flower color is dominant over the white flower color.

Assuming the allele for purple flower color is P and that of the white flower color is p, a standard monohybrid cross will involve a true breeding PP and pp.

PP x pp: Pp, Pp, Pp and Pp. All the F1 offspring will have purple flowers with Pp genotype.

At F2: Pp x Pp = PP, Pp, Pp, and pp.

3/4 or 75% of the F2 offspring have purple flower color out of which 1 is true breeding for the trait.

Hence the fraction of the purple flowered peas in the F2 that is expected to be true-breeding (PP) is 1 out of 3.

7 0

4 years ago

How much energy does nuclear fusion generate

Pavlova-9 [17]

4. E=mc²

Explanation:

The best approximation of the energy released during a nuclear fusion process can best be determined using the Einstein equation.

In nuclear reactions, mass and energy are equivalent:

E = mc²

E is the energy

m is the mass

c is the speed of light

In nuclear reactions, some of the mass is converted into the energy.
Therefore mass is not conserved in such equations.
This is why they release huge amount of energy.
From this equation, we know that the more mass loss, the more the energy that would be produced.
In a fusion reaction, two light nuclei combines to form a heavier one.

learn more:

Non-renewable resource brainly.com/question/2948717

#learnwithBrainly

4 0

4 years ago

Some trolls have one eye (EE, Ee) while others have two (ee). Two heterozygous one-eyed trolls are crossed. What is the expected

Vlad1618 [11]

Answer:

75% one eye, 25% two eyes (or 3:1 one eye: two eye)

Explanation:

The cross between the two trolls are shown in the attached punnett square

Ee x Ee gives 3 genotypes: EE, Ee, and ee

at a ratio of :1 EE: 2 Ee: 1 ee

Ee and EE are both one eye genotypes, so the <em>phenotype </em>is 3:1 one eye to two eye.

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6 0

4 years ago