While conducting experiments with E. coli, Meselson and Stahl established that during DNA replication, each of the two strands that compose the double helix were used as a template for the new strands of DNA. The scientists described the replication method as semi-conservative. Explain what this means in terms of DNA replication.
A) The two original DNA strands, the parental strands, woulde-be used as templates to synthesize new strands.
B) After base pairing, both copies of the new DNA molecules would be a mix of alternating segments of old and new DNA.
C) Base pairing would result in two double-stranded DNA molecules that would include one parental or old strand and one daughter or new strand.
D) The two newly-synthesized strands, the daughter strands, would basepair with each other; one to form one all-old strand and one all-new strand.

Liquid water turns into water vapor at which step in the water cycle

Chapter 11.1 & 11.2 notes section 11.1 1. every living thing has a set of ? inherited from its parents. 2. after becoming a ? , mendel spent several years studying ? and mathematics at the university of vienna. 3. during sexual reproduction, male and female reproductive cells join, a process known as ? . 4. pea flowers are normally ? , which means that sperm cells in pollen fertilize the egg cells in the ? flowers. 5. when mendel crossed plants with ? characters for the same trait, the resulting offspring had only one of the characters. 6. a ? is a specific characteristic, such as seed color or plant height, that varies from one individual to another. 7. filius and filia are the latin words for ? and ? . 8. the offspring of crosses between parents with different traits are called ? . 9.to mendel's surprise, all of the offspring had the character of only ? of the parents. 10. mendel's first conclusion was that biological inheritance is determined by ? that are ? from one generation to the next. 11. scientist calls the chemical factors that determine traits ? . 12. mendel's second conclusion is the ? . 13. the principle of dominance states that some alleles are ? and others are ? . 14. when mendel allowed the f1 plants to reproduce by self-pollination the traits controlled by ? alleles reappeared in about ? of the f2 plants in each cross.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d