Fill in the blanks. Correct spelling is essential. Horizonta…
Fill in the blanks. Correct spelling is essential. Horizontal layers of rock are called _______ . _______ occurs when remains of dead organisms are turned to stone. The _______ fossils are found in the deepest strata. A seashell might make an imprint in mud, which forms a _______ . Plants are frequently found fossilized as _______ fossils. Coprolites (animal excrement) are an example of _______ fossils. Fossils generally become exposed as the result of millions of years of _______ .
Read DetailsThe mRNA then travels from the nucleus to the _______ , to t…
The mRNA then travels from the nucleus to the _______ , to the protein-making machinery, called the _______ . It starts at the sequence _______ , and reads _______ nucleotides at a time. Each 3-nucleotide _______ specifies a particular _______ . The _______ codons tell the ribosome that the _______ is complete.
Read DetailsThe human genome contains about _______ genes. (Type just …
The human genome contains about _______ genes. (Type just a number; no words.) Cells use the two-step process of _______ followed by _______ to read each gene and produce the string of _______ that makes up a _______ . Transcription happens in the _______ , when the cell’s machinery copies the gene sequence into _______ RNA. (Spell out the entire word.) In mRNA, the base _______ replaces thymine.
Read DetailsThe pedigree chart on page 112 shows a family with a history…
The pedigree chart on page 112 shows a family with a history of Huntington’s disease. If H = the Huntington’s gene, and h = the normal gene, then all of the family members whose symbols are not colored in do not have Huntington’s, and all of them would have the genotype _______ . All of the family members whose symbols are colored in do have Huntington’s, and all of them must have the genotype _______ .
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