Which fossil is the earliest known bird with a beak?

a. All of these had beaks

b. Sinosauropteryx
c. None of these had a beak.
d. Confuciusornis
e. Archaeopteryx


d

Biology & Microbiology

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You are working in a medical research lab and have to determine if a patient is heterozygous or homozygous for a particular restriction site

After treating the DNA with a restriction enzyme that cuts at that site, you subject the sample to gel electrophoresis. How many bands would be indicative of the heterozygous condition? A. one B. two C. three D. four E. Impossible to answer from the information given.

Biology & Microbiology

The hallucinogen LSD is a product of ________.

A. basidiomycetes B. yeasts C. zygomycetes D. ascomycetes

Biology & Microbiology

If a person has five fingers, his genotype is _____

a. ff b. Ff c. FF d. Ff or ff

Biology & Microbiology

Humans are iteroparous.

Answer the following statement true (T) or false (F)

Biology & Microbiology