Please help with biology and explain i want to double check my reasoning 1 QUEST

Question

Please help with biology and explain i want to double check my reasoning

1 QUESTION 1 Which of the following is incorrect? Mitosis results in diploid cells PCR is capable of replicating only part of the genome DNA is synthesized from 3' to 5' Rosalind Franklin contributed to the discovery of the structure of DNA Purines have a two-ring structure QUESTION 2 Chargaff first described: DNA can program cells DNA as the genetic material The correct position of hydrogen bonds in the structure of DNA O That DNA bases are found in equal ratios That DNA bases are found in differing amounts, with complimentary bases being found in the same amount

Explanation / Answer

Answer 1] =

the incorrect statement is

DNA is synthesized from 3 prime to 5 prime

explaination = DNA is synthesized from 5 prime to 3 prime direction

DNA polymerase catalyses polymerization only in one direction that is 5 prime to 3 prime direction

all other statements are correct i.e. mitosis results in diploid cells after mitosis cell divides to form two cells

purine is 2 ring compound

ANSWER 2] Chargoffs first described

DNA bases are found in differing amount ,with complementary bases are found in equal amounts

explaination- chargoffs rule states that DNA from any cell of all organisms should have an 1:1 ratio of pyrimidine & purine bases

and amount of Adenine is equal to the its complementary base i.e. Thymine & amount of guanine is equal to amount of cytosine

but all bases are present in differing amounts

ANSWER= During anaphase

Chromosomes come apart at the centromere & migrate towards either side of the cell

Explaination =

it is the shortest phase of karyokinesis in which centromeres divide into two ,resulting in the separation of chromatids

each separated chromatid is now called as daughter chromosome

centrosomes move & spindle is formed & chromosomes migrate towards the center of the cell

= during metaphase

DNA is replicated = during S phase

DNA condenses -= during prophase

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.