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Science Test
Question | Answer |
---|---|
What does heredity ? | passing traits from offspring |
What are genetics ? | the study of heredity and variation in organisms |
What is DNA? | a double stranded helical nucleic acid molecule that codes ans stores genetic information it determines the inherited structure of cells proteins |
What are chromosomes? | thread like strands of DNA and protein in a cell nucleus that carry the code fr the inherited characteristics of an organism |
What is a gene? | a distinct unit of hereditary material found in chromosomes the region of DNA that directs the making of a specific protein thus controlling traits that are passed in offspring |
What is an allele? | different forms of a gene controlling a particular trait; e.g.,one allele fro height may be short while another allele may be tall |
What is a dominant allele? | the from of a gene that appears to dominate or mask another form of the same trait the form of the allele that is most often expressed in the phenotype |
What is a recessive allele? | the from of a gene that is often masked by the dominant allele and is therefore often not expressed in the phenotype |
What does homologous mean? | Same |
What is a genotype ? | the genetic makeup of an individual |
What is a phenotype ? | the physical traits that appear in an individual as a result of its genetic makeup |
What is a punnett square ? | a chart that defines either your genotype or phenotype |
Who two people made the first DNA model? | James Watson and Francis Crick |
What always goes with Adenine (A)? | Thymine (T) |
What always goes with Cytosine (C)? | Guanine (G) |
What does RNA mean? | Ribonucleic Acid |
What would go with these letters? " ATGCATAGCCGTATC" in DNA | TACGTATCGGCATAG |
Who made the Chargaff's rules? | Erwin Chargaff |
Who is considered the "Father" of Genetics? | Gregor Mendel |
What did Mendel use to explore genetics or DNA | Pea plants |