Human and Chimp - Marvel EDU

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Practice Listening: Highlight Incorrect Words ID: #32808 Short Human and Chimp

Instructions ›

You will hear a recording. Below is a transcription of the recording. Some words in the transcription differ from what the speaker said. Please click on the words that are different.

* Click on the words that are different from what you hear

Result:

Correct Transcript:

You can't help but wonder, how can that How can so few changes make such a big difference? researchers working with fruit bats and mice think they have an answer. And it lies less in the animals' genes than in the short snippets of DNA that control when and where and how vigorously genes are turned on. If you've ever thought that a bat is basically just a rodent with wings, you're not too far from the mark. One of the most obvious differences between bats and mice is their forearms. Mice have these stubby little legs, and bats have these large leathery wings. But even those differences are not as major as you might imagine. Mice and bats both have a gene called Prxl, which regulates limb development. But the gene is more active in the budding wings of bats. So the researchers took the piece of DNA that control Prxl activity from a bat and stuck it into a mouse. The result pictured in the January 15 issue of Genes and Development.

AI explanationShows the answer. Tap to open.

Printed "freelances", the speaker says "researchers"

Explanation: Here the speaker says "researchers working with fruit bats". The printed word "freelances" is on the page. They start with different letters, so listen to the start of the word.

Printed "inveteracy", the speaker says "vigorously"

Explanation: The speaker says "how vigorously genes are turned on". The printed and spoken words begin with different letters, so listen to the start of the word.

Printed "alliterative", the speaker says "differences"

Explanation: Listen for "differences between bats and mice". The printed and spoken words start with different letters, so wait for the whole word.

Printed "coasts", the speaker says "control"

Explanation: You will hear "control Prxl activity from a bat". The printed word "coasts" is on the page. Both words start with the same letter, so listen to the whole word.

Printed "rewarmed", the speaker says "pictured"

Explanation: On the recording the words are "pictured in the January 15 issue". They end with the same two letters, so listen for a different start to the word.

"Prxl" matches the audio

Explanation: "a gene called Prxl," has a rare name. It looks like a trick, but the speaker says it exactly, so do not click it.

"forearms" matches the audio

Explanation: "their forearms" is printed here. It sits near the change, yet the speaker says it exactly, so do not click it.

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