Which is a true statement about regulative development?Multiple ChoiceEarly blastomeres are committed to the development of a specific type of tissue.If an embryo splits in two, identical twins result.Body form is determined by cell fates genetically predetermined in each cell.Only invertebrates exhibit regulative development.
Question
Which is a true statement about regulative development?Multiple ChoiceEarly blastomeres are committed to the development of a specific type of tissue.If an embryo splits in two, identical twins result.Body form is determined by cell fates genetically predetermined in each cell.Only invertebrates exhibit regulative development.
Solution
The true statement about regulative development is: "If an embryo splits in two, identical twins result."
Here's why:
Regulative development refers to the ability of an embryo to regulate the development process. This means that if a part of the embryo is removed or added, the remaining cells can adjust and still develop into a complete organism. This is what happens when an embryo splits in two, resulting in identical twins. Each half of the embryo adjusts and develops into a complete individual, and because they originated from the same embryo, they are genetically identical.
The other options are not true for regulative development. Early blastomeres are not committed to the development of a specific type of tissue in regulative development. Instead, they have the potential to develop into any type of tissue. Body form is not determined by cell fates genetically predetermined in each cell in regulative development. Instead, cell fates can change based on interactions with other cells. And finally, not only invertebrates exhibit regulative development. Many organisms, including vertebrates, also exhibit regulative development.
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