A dichotomous key starts with _ information and leads to _ information

2 answers:

7 0

The dichotomous key is used as a classifying tool for items in the natural world, (trees, wildflowers, mammals, reptiles, rocks...). At each step of the classification process, the user is given two choices and each choice leads to another question until the item is identified.
A dichotomous key starts with specific information and leads to general information.

n200080 [17]3 years ago

5 0

The answer is B general, specific

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Suppose two BbCc mice are crossed together. Assuming that the two genes assort independently, what are the expected phenotypes,

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Answer:

4 types of phenotypes with phenotypic ratio 9:3:3:1 will be obtained.

Explanation:

The Punnett square diagram for the cross between mice with genotype BbCc & BbCc is attached.

It is clear from the diagram attached that the phenotypic ratio will be 9:3:3:1

The following 9 genotypes will show dominant trait for both the characters i.e. characters represented by B & C genes.

BBCC, BBCc, BbCC, BbCc, BBCc, BbCc, BbCC, BbCc, BbCc

The following 3 genotypes will show dominant trait for one character represented by gene B and recessive trait for other character represented by gene C.

BBcc, Bbcc, Bbcc

The following 3 genotypes will show recessive trait for one character represented by gene B and dominant trait for other character represented by gene C.

bbCC, bbCc, bbCc