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2 years ago

Which characteristic defines all dichotomous keys?

Biology

2 answers:

boyakko [2]2 years ago

4 0

Answer:

Each is a series of statements

Explanation:

If you have seen dichotomous keys you see that there are tables and flo charts. Notice each answer choice says "Each" but there are many different kinds. Dichotomous keys are definitely not mathematical formulas. SO you can infer it is a series of statements. Also I took the test

vova2212 [387]2 years ago

3 0

Answer:

c. Each key is organized as a flowchart.

Explanation:

A dichotomous key is a device that enables users to recognise natural world objects, such as wildflowers, trees, reptiles, mammals, fish and rocks. it used for the Identification whereby groups of species are frequently divided into two categories with increasing sequential division, more information on the basic characteristics of a particular organism is released.

Dichotomous keys are represented in two ways including either as descriptive representation in which a series of paired statements arraged in a numbered sequence or as a branching flowchart (diagrammatic representation) .

Hence, the correct option is c.

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Answer:

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Explanation:

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3 years ago

in 1952 franklin rosalind took a x-ray photograph shown below, which gave the world its first glance at DNA. In studying this ph

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2 years ago

True or false a substitution in an exon that does not change the amino-acid product probaly occurred in the first base position

Irina18 [472]

Answer:

True or False?

A substitution in an exon that doews not change the amino-acid product probably occurred in the FIRST base position.

False; Third

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2 years ago

scalloped (sd) is an X-linked recessive and ebony (e) is an autosomal recessive mutation. What proportion of scalloped, ebony fe

alisha [4.7K]

Answer:

1/16

Explanation:

scalloped (Xsd) is an X-linked recessive trait to Xsd+ (wild type)
ebony (e) is an autosomal mutation recessive to e+ (wild type).

The two genes are independent because they are located on different chromosomes.

<h3>Parental generation:</h3>

True breeding scalloped female wild type for ebony (Xsd Xsd e+e+) mates with a true breeding male mutant only for ebony (Xsd+ Y ee).

The female only produces Xsd e+ gametes. The male produces Xsd+ e or Y e gametes. Therefore, the F1 females will have the genotype Xsd Xsd+ e e+ and the F1 males will have the genotype Xsd Y e e+.

If you complete a Punnett Square with the gametes the two F1 individuals can produce, you will get all the F2 proportions. The scalloped, ebony females have a Xsd Xsd e e genotype and appear in a 1/16 proportion.

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3 years ago

The atmosphere of Earth contains primarily which gas?

Dominik [7]

The atmosphere of Earth contains primarily nitrogen, 78.09% of nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.

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2 years ago