Leona drew a diagram to compare ginkgoes and conifers. Which characteristic belongs in the area marked X?

are deciduous
produce cones
look like palm trees
are the largest group

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.