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Twelfth Grade (Grade 12) Development and Reproduction Questions

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Grade 12 Development and Reproduction
The process of producing new animals is reproduction.
  1. True
  2. False
Grade 12 Development and Reproduction
The multicellular stage in which animals take the form of a ball is the                .
  1. larva
  2. blastospore
  3. blastula
  4. body plan
Grade 12 Development and Reproduction
Genes that control the expression of other genes are                . The HOX gene is an example.
  1. homeobox genes
  2. acoelomates
  3. coelomates
  4. Eumetazoans
Grade 12 Development and Reproduction
What is cleavage?
  1. the succession of mitotic cell divisions without cell growth between the divisions
  2. another name for fertilization
  3. a phase in meiosis
  4. the exchange of DNA between chromosomes
Grade 12 Development and Reproduction
When species interbreed, they often produce offspring that are                .
  1. sterile
  2. mobile
  3. sessile
  4. fertile
Grade 12 Development and Reproduction
An organism having two germ layers during development is                .
  1. a blastula
  2. a coelomate
  3. triploblastic
  4. diploblastic
Grade 12 Development and Reproduction
Many of the bones of a neonate are                   .
  1. soft and pliable
  2. stiff and hard
  3. broken and chipped
  4. their full size
Grade 12 Development and Reproduction
About 90% of newborns are approximately 18 to 22 inches in length.
  1. True
  2. False
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