Analysis Version
v1
History
Back to Study: From landrace to modern hybrid broccoli: the genom...
quantitative
Analysis v1
0
Pro
37
Against

The DNA of modern broccoli has more A and T building blocks than older types — a pattern also seen in corn and soybeans, likely from long-term breeding.

Scientific Claim

Modern hybrid broccoli exhibits a genome-wide AT nucleotide bias (0.373) compared to landraces (0.344), a pattern also seen in other domesticated crops like maize and soybean.

Original Statement

“Mean genome-wide [AT] base composition was highest in the Calabrese hybrid subpopulation and different between subpopulations (p < 0.01)... Calabrese hybrids = 0.373.”

From study:From landrace to modern hybrid broccoli: the genomic and morphological domestication syndrome within a diverse B. oleracea collection.

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The claim describes a measured compositional difference without asserting causation. 'Exhibits' is appropriately non-causal.

Evidence from Studies

Supporting (0)

0
No supporting evidence found

Contradicting (1)

37
37

From landrace to modern hybrid broccoli: the genomic and morphological domestication syndrome within a diverse B. oleracea collection.

Cross-Sectional Study

The study looks at how broccoli has changed over time but doesn’t measure the balance of A and T letters in its DNA, which is what the claim is about.

Source Study

From landrace to modern hybrid broccoli: the genomic and morphological domestication syndrome within a diverse B. oleracea collection.

Score: 37
DOI: 10.1038/s41438-020-00375-0

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