The Hox Genes Came to Regulate Each of the Following

question 20

Multiple Choice

The Hox genes came to regulate each of the following in what sequence, from earliest to most recent?
1) identity and position of paired appendages in protostome embryos
2) anterior-posterior orientation of segments in protostome embryos
3) positioning of tentacles in cnidarians
4) anterior-posterior orientation in vertebrate embryos

• A) 4 → 1 → 3 → 2
• B) 4 → 2 → 3 → 1
• C) 4 → 2 → 1 → 3
• D) 3 → 2 → 1 → 4
• E) 3 → 4 → 1 → 2

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Definitions:

Operating System

The software that manages the hardware and software resources on a computer, serving as a base for all application software.

Fflush() Function

A standard library function in C that cleans up the output buffer, forcing the buffered data to be written to the output.

Internal File Pointer

An abstraction in file handling that represents the current location for the next read or write operation in a file.

FOPEN_MAX

A macro in C programming that specifies the maximum number of files that can be open simultaneously by a program.