Assuming complete dominance, what is the expected ratio of phenotypes of the offspring following the cross of two heterozygotes?
A) 4:1
B) 1:1
C) 3:1
D) 1:2:1
C
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When a mutation occurs during DNA replication, ____ replaces the incorrect nucleotide with the correct one after the
mismatched nucleotide has been removed. a. mismatch repair enzymes b. DNA ligase c. DNA polymerase d. telomerase e. helicase
Which of the following is synonymous with cellular senescence?
a. the loss of proliferative ability b. the gain of proliferative ability c. the gain of contact inhibition d. the loss of contact inhibition
Sexual reproduction leads to offspring that are all genetically different from one another and from either parent. What are the three aspects of sexual reproduction that lead to this variation?
a) shuffling and reassortment of homologues during mitosis; shuffling and reassortment of homologues during meiosis; and combination of alleles from two parents at fertilization. b) crossing over during the production of zygotes; shuffling and reassortment of homologues during mitosis; and combination of alleles from two parents at fertilization. c) crossing over during the production of gametes; shuffling and reassortment of homologues during mitosis; and combination of alleles from two parents during binary fission. d) crossing over during the production of gametes; shuffling and reassortment of homologues during mitosis; and combination of alleles from two parents at fertilization. e) crossing over during the production of gametes; shuffling and reassortment of homologues during meiosis; and combination of alleles from two parents at fertilization.
How many carbons in pyruvate?
What will be an ideal response?