What can you conclude from these results?
You are breeding different varieties of roses in your garden. When you cross a true-breeding yellow "Texas Beauty" rose with a true-breeding "Ruby" red rose, you get all red roses. But when you cross a "Texas Beauty" yellow with the yellow variety "Jealousy," you get a 9:7 ratio of red to yellow flowers!
A. The environment, and not genes, influences pigment in these rose varieties.
B. There are epistatic interactions between at least two genes for rose pigment.
C. The red allele is dominant to the yellow allele.
D. There is a mutation in the gene for yellow pigment in the "Jealosy" variety.
E. There is no recessive allele for the red pigment gene.
B. There are epistatic interactions between at least two genes for rose pigment.
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Which of the following will eventually
produce a female gametophyte?
a. megaspore b. microsporangium c. microspore d. megasporangium e. female gametes
What is a disadvantage of cloning as a propagation technique?
A) Cloning produces monocultures that can potentially be wiped out by a single disease. B) Cloning is more expensive and more difficult than growing from seeds. C) Cloning is time-consuming, with slow results. D) Cloned organisms are dangerous and unpredictable.
The cell nucleus likely originated from:
a. a mitochondrion. c. a bacteria. b. an archaea. d. a eukaryote.
Organic molecules that generally repel water are called _____.
A. hydrophilic B. lipids C. amino D. acids E. proteins