How do undifferentiated cells "know" what to become?
What will be an ideal response?
Interactions among neighboring cells, homeoboxes, and induction affect the transcriptions of specific genes within a cell and determine which genes get transcribed and what the cell will become.
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A fruit fly homozygous for wild-type eyes and straight wings was crossed with a fly homozygous for rosy eyes and wrinkled wings. The progeny all showed wild-type eyes and straight wings
When crossing the F1, the resulting offspring showed 3 wild-type eyes/straight wings : 1 rosy eyes/wrinkled wings. This data suggest: A. rosy eyes is dominant. B. straight wings is recessive. C. these two genes are linked. D. these two genes are sex-linked. E. these two genes are codominant.
The transformation of a normal cell into a cancer cell is ____________________. Fill in the blank(s) with the appropriate word(s)
A major change that occurred during the evolution of plants from their algal ancestors was the origin of a branched sporophyte. What advantage would branched sporophytes provide in this stage of the life cycle?
A) increased gamete production B) increased spore production C) increased potential for independence of the diploid stage from the haploid stage D) increased fertilization rate E) increased size of the diploid stage
Muscle that is not exercised will turn into fat.
a. true b. false