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Which of the following properties of DNA was discovered by James Watson and Francis Crick?
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100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
Red flowers (R) are dominant to white flowers (r). What percent of offspring would have red flowers if a plant with a red flower phenotype and the genotype Rr was crossed with another plant with a red flower phenotype and the genotype Rr?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
Kara has a plant that produces either purple or white flowers. She crosses a plant that has two recessive alleles for white flowers with a plant that has two dominant alleles for purple flowers. Which result would be true of all of the offspring?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
For a type of pea plant, round seeds (R) are dominant to wrinkled seeds (r). A pea plant with the genotype Rr is crossed with another pea plant with the genotype Rr. What percent of the offspring are expected to have wrinkled seeds?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
Gregor Mendel observed that two plants with purple flowers could produce some offspring with white flowers and some offspring with purple flowers. Which of the following did Mendel use to explain this result?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
Raylene inherited certain physical characteristics from her parents. Which of these follow is not an inherited characteristic?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
For a particular type of plant, red flowers (R) are dominant to white flowers (r). If a plant with the genotype RR is crossed with a plant with the genotype Rr, what percent of the offspring are expected to have red flowers?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
DNA contains genes that provide instructions for inherited traits. What is the relationship between the genes and chromosomes?
25
75
100
All of the offspring would have one recessive allele, one dominant allele, and purple flowers.
long fingernails
DNA looks like a long, twisted ladder.
dominant and recessive traits
Genes are segments of DNA that are located on the chromosomes of each cell.
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