Chapter 10 Mastering Biology

If crossing over did not occur, which of the following statements about meiosis would be true? Select all that apply.

There would be less genetic variation among gametes.

Look at the cell in the figure. Based on this figure, which of the following statements is true?

This cell is diploid.

Identify all possible products of meiosis in plant and animal life cycles.

Spores Gametes (sperm and eggs)

Which of the following occurs during meiosis but not during mitosis?

Synapsis occurs.

In alternation of generations, what is the diploid stage of a plant that follows fertilization called?

sporophyte

Which statement correctly describes how cellular DNA content an d ploidy levels change during meiosis I and meiosis II?

DNA content is halved in both meiosis I and meiosis II. Ploidy level changes from diploid to haploid in meiosis I, and remains haploid in meiosis II.

First, drag blue labels onto blue targets only to identify each stage of the life cycle. Next, drag pink labels onto pink targets only to identify the process by which each stage occurs. Then, drag white labels onto white targets only to identify the ploidy level at each stage.

a) 2n b) 2n c) meiosis d) meiosis e) n f) egg g) sperm h) n i) fertilization j) 2n k) zygote l) mitosis m) 2n n) meiosis o) n p) egg

Drag the labels from the left to their correct locations in the concept map on the right.

a) chromatin b) genes c) chromosomes d) genome e) traits f) locus g) gametes

Drag the labels to their appropriate targets to correctly identify the various chromosome structures. Labels can be used more than once.

a) non-homologous chromosomes b) sister chromatids c) homologous chromosomes d) centromere e) non-sister chromatids f) homologous chromosomes g)sister chromatids

Sort each process into the appropriate bin according to whether it contributes to heredity only, genetic variation only, or both. (Note that a bin may be left empty.)

all options contribute to both and go in the both bin.