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Biology

Mendel crossed purebred purple-flowered plants with purebred white-flowered plants, and all of the resultingoffspring produced purple flowers. The offspring are all ________, and the allele for purple flowers is __. A) heterozygotes... recessive B) heterozygotes... dominant C) homozygotes... recessive D) homozygotes... dominant

Which of these best represents a fatty acid molecule?

Cells that are specialized A)are less complex. B)perform different functions for the organism. C)reproduce. D)are stem cells.

A fossil species is found in the same rock layer with Fossil 3 and Fossil 4. When could this species have existed?

How does the nucleus control which proteins are made by ribosomes?

what are somatic cells

What do all codes, such as Morse code and Braille, have in common?

what kind of pyramid of numbers and pyramid of biomass will be formed in a forest with 75 tigers, 5,000 dears, and 1,00,000 trees? A) both pyramids will be upright B)both pyramids will be inverted C) No pyramid can be formed

what prevents the lac genes in the DNA of E. colin from being expressed most of the time ?

Earth’s energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ideal energy source for generating most of your home’s electricity, and explain why you chose that source.

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