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pychu [463]
3 years ago
6

Use this chart of a portion of a dichotomous key to answer the question. dichotomous key which question distinguishes organism x

from organism z? question 1 question 3 question 9 question 10
Biology
2 answers:
Artist 52 [7]3 years ago
6 0
The answer to your problem is question 3 i just took that test i got it right
svetlana [45]3 years ago
3 0

Answer:

Question 3

Explanation:

I had the test, and i studied

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e. Red segregated from brown in meiosis I, and straight segregated from curled in meiosis I.

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A cross between two flies heterozygous for both genes produced an offspring with the phenotypic ratio of 9:3:3:1. This ratio is expected according to Mendel's law of independent assortment, which states that alleles of the same gene assort independently during gamete formation.

Before meiosis starts in flies, a single diploid cell duplicates its DNA, so each chromosome has 2 sister chromatids that contain the same information.

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In a heterozygous fly, each homologous chromosome contains a different allele, and the sister chromatids are copies that carry the same allele. For that reason, both traits were segregated during meiosis I.

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