Blood type in humans is an example of trait that has multiple alleles. the alleles for type a blood and type b blood are codominant, and type o blood is recessive to both type a and type b. if a girl with type ab blood has a brother with type o blood and a sister with type b blood, which of the following genotypes could it be possible for their parents to have?

ao and bo

ab and oo

ab and bo

ao and ab

What two fields of study provide the core information that is used to classify organisms?

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.

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems