Hox genes are regulatory genes in multicellular animals that code for transcription factors that determine the basic body plan in a developing embryo. They act as switches that turn other genes on and off. Scientists have found that a mutation in a fruit fly hox gene produces flies with legs instead of antennae sticking out of their heads. Another hox gene mutation results in fruit flies with two pairs of wings instead of one pair. Hox genes affect body plans by controlling the expression of many other genes.

Question

Hox genes are regulatory genes in multicellular animals that code for transcription factors that determine the basic body plan in a developing embryo. They act as switches that turn other genes on and off. Scientists have found that a mutation in a fruit fly hox gene produces flies with legs instead of antennae sticking out of their heads. Another hox gene mutation results in fruit flies with two pairs of wings instead of one pair. Hox genes affect body plans by controlling the expression of many other genes.

Many multicellular animals have the same hox genes. Which statement is evidence for this claim?

Answer 1

The statement "Scientists have found that a mutation in a fruit fly hox gene produces flies with legs instead of antennae sticking out of their heads. Another hox gene mutation results in fruit flies with two pairs of wings instead of one pair." is evidence for the claim that many multicellular animals have the same hox genes. This is because fruit flies are multicellular animals, indicating that they possess hox genes. Additionally, the fact that these specific hox gene mutations result in similar changes in body plan (i.e. legs instead of antennae and two pairs of wings instead of one) suggests that there is a similarity in the function and regulation of hox genes across different multicellular animals.

Answer 2

The evidence for the claim that many multicellular animals have the same hox genes is that the genes have been found to be highly conserved, meaning they have remained relatively unchanged in their DNA sequence across various animal species over evolutionary time. This conservation suggests that hox genes play crucial roles in the development of body plans across different animal groups.

Answer 3

To find evidence for the claim that many multicellular animals have the same hox genes, we can look for scientific studies or research that supports this statement. One way to do this is by conducting literature review or searching for relevant scientific articles.

Here is the step-by-step explanation of how to conduct a literature review to find evidence for the claim:

1. Begin by selecting a reputable scientific database or search engine. Some common databases include PubMed, Google Scholar, and ScienceDirect.

2. Formulate a search query that includes relevant keywords. In this case, you can use terms such as "hox genes in multicellular animals," "conservation of hox genes," or "hox gene homology."

3. Input the search query into the chosen scientific database. This will generate a list of relevant scientific articles.

4. Review the search results and read the abstracts of the articles to determine if they discuss the conservation of hox genes in multicellular animals.

5. Select the articles that provide evidence for the claim. These articles may describe studies where researchers have identified and compared hox genes in various multicellular animals.

6. Read the selected articles thoroughly to gather information and evidence supporting the claim that many multicellular animals possess the same hox genes.

By following these steps, you should be able to find scientific evidence that supports the claim that many multicellular animals have the same hox genes.