23. Which phase of meiosis is most like mitosis? a. The first round of cell divi

Question

23. Which phase of meiosis is most like mitosis? a. The first round of cell division b. The second round of cell division C. When binary fission occurs d. During metaphase 1 e. There are no similarities. 24. A dihybrid cross examines inheritance patterns between a. a mother and a father b. many generations of families c. 2 alleles of 1 gene d. 2 alleles of 2 genes. e. 2 alleles of 3 genes 5- 27: Indicate the the predicted ratio of the following crosses of purple a te flowers. Use the Punnett square to help youl 25.PP X pp a. all purple b. all white c. all light purple d. a mixture of 3 purple and 1 white e. a mixture of 2 purple and 2 white. 26.Pp X Pp a. all purple b. all white c. all light purple d. a mixture of 3 purple and 1 white e. a mixture of 2 purple and 2 white. a. all purple b. all white c. all light purple d. a mixture of 3 purple and 1 white e. a mixture of 2 purple and 2 white. 28. Of the 5 elements Mendel inheritance model, which do we now know is not necessarily true? a. Parents transmit discrete factors (genes). b. Each individual receives one copy of a gene from each parent c. Not all copies of a gene are identical. d. Alleles remain discrete- no blending e. Presence of allele does not guarantee expression.

Explanation / Answer

23. b. The second round of cell division.

In the second round of cell division in meiosis, sister chromatids separate like in mitosis.

24. d. 2 alleles of 2 genes.

Mendels showed the assortments of alleles present in 2 genes in dihybrid cross.

25. a. All purple

PP x pp

Punnett square analysis:

26. d. A mixture of 3 purple and one white.

Pp x Pp

Punnett square analysis:

P P p Pp (Purple) Pp (Purple) p Pp (Purple) Pp (Purple)

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