Semi-conservative replication refers to A. each base bonding at the 1' position of the sugar. B. a purine always bonding to a py
rimidine. C. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction. D. an original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule. E. None of the choices is correct.
1 answer:
Answer:
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule.
Explanation:
- Semi-conservative replication refers to two strands of DNA unzip, and a new strand is assembled onto each 'conserved' strand.
- The replicated double helix consists of one old strand and one newly synthesised strand.
- It describes the structure of DNA, a twisted helix of two strands with bases joining the strands.
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Answer:
A) The frequency of the dominant allele, C
B) frequency of the heterozygous genotype, Cc
Explanation:
Given -
Curly hair, C, is the dominant allele, and straight hair, c, is the recessive allele
Number of students with curly hair is
Thus frequency of genotype "CC"
Thus, frequency of allele "q"
As per Hardy Weinberg's first equation-
Substituting the value of q, we get -
As per Hardy Weinberg's second equation -
Substituting the values of "p" and "q" we get -
Hence,
A) The frequency of the dominant allele, C
B) frequency of the heterozygous genotype, Cc