LEAP 2025 Biology Practice Test Questions and Answers | 100% Pass
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Course
LEAP
Institution
LEAP
LEAP 2025 Biology Practice Test
Questions and Answers | 100% Pass
Which claim is supported by the information in Graph 1 and Graph 2?
A. The mass of the eggs and the number of eggs produced by sockeye salmon are
independent of the females mass.
B. The mass of the eggs produced by sockeye salmo...
C. Changes in placodes over time allowed for the development of different structures.
D. Placodes evolved directly from mutations that result in the growth of scales. -
Answer✔️✔️-C. Changes in placodes over time allowed for the development of different
structures.
Part A
Which statement best explains what caused some theropods to develop feathers?
A. A mutation in DNA affected the types of proteins produced by placodes.
B. A protein in the placodes caused a mutation in the gene that produces feathers.
C. A mutation in the placode gene caused placodes to produce different DNA.
D. A mutation in DNA caused the placodes that control genes to grow feathers.
Part B
Which information is evidence that best supports the answer to Part A?
A. The DNA of modern-day vertebrates codes for the proteins in placodes.
B. All vertebrate embryos have the same genetic mutations in their placode DNA.
C. Placodes in all modern-day embryos contain the same number of mutations.
D. A single placode can spontaneously develop into any type of body covering. -
Answer✔️✔️-Part A
A. A mutation in DNA affected the types of proteins produced by placodes.
Part B
A. The DNA of modern-day vertebrates codes for the proteins in placodes.
Which evidence best supports the claim that birds evolved from dinosaurs?
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