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Alexus [3.1K]
3 years ago
10

A team of scientists placed five rocks in five separate, artificial environments. All the rocks came from the same formation and

had the same chemical composition. The table describes the environment for each rock:
Rock A Rock B Rock C Rock D Rock E
intermittent rain showers
temperatures alternating between -2°C and 20°C
frequent acidic showers that contain carbonic acid covered with algae and lichen placed in an oxygen-rich environment
hot and dry environment
low temperature of 35°C

After the experiment, the scientists observed that one particular rock had large fractures and had split into two pieces. They also observed that, compared to the other rocks, the chemical composition of this particular rock had remained largely unchanged. Which rock most likely fits this description?

A.
Rock A
B.
Rock B
C.
Rock C
D.
Rock D
E.
Rock E
Biology
1 answer:
nataly862011 [7]3 years ago
7 0

Answer:

Rock D

Explanation:

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A geneticist is studying two traits in the fruit fly - eye color and wing shape. They perform a dihybrid cross. If the genes for
Len [333]

Answer:

3/16

Explanation:

<u>According to Mendel's law of independent assortment of genes, when a dihybrid cross involves two genes that assort independently and one of the parents is dominant for the two genes and the other is recessive, the phenotypic ratio of the offspring at F2 would be 9:3:3:1</u>. The proportion of the offspring with the dominant parental traits would be 9/16, those with the recessive parental traits would be 1/16, while those with mixed traits would be 3/16 each.

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     EeWw    x    EeWw

E_W_ - 9/16 (dominant for both eye color and wing shape)

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eeW_ - 3/16 (recessive for eye color and dominant for wing shape)

eeww - 1/16 (recessive for both eye color and wing shape)

<em>Hence, the proportion of the offspring with dominant phenotype for eye color and recessive phenotype for wing shape would be </em><em>3/16.</em>

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Answer:

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Explanation:

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