Chapter 13 Meosis & Sexual Life Cycles

Helpfulness: +4
Set Details Share
created 4 years ago by tieshasecret12
90,387 views
updated 4 years ago by tieshasecret12
Grade levels:
9th grade, 10th grade, 11th grade, 12th grade, College: First year, College: Second year, College: Third year, College: Fourth year, Graduate school, Professional
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1
card image

What name is given to this process?

asexual reproduction

A single individual is reproducing.

2

Human gametes are produced by _____.

meiosis

Meiosis produces haploid gametes from a diploid parental cell.

3

Normal human gametes carry _____ chromosomes.

23

4
card image

Which of these cells is (are) haploid?

C and D

Once meiosis I is completed, cells are haploid.

5

A diploid organism whose somatic (nonsex) cells each contain 32 chromosomes produces gametes containing _____ chromosomes.

16 (half of 32)

6

Asexual reproduction _____.

produces offspring genetically identical to the parent

Only one individual makes a genetic contribution to the offspring.

7

What number and types of chromosomes are found in a human somatic cell?

44 autosomes and 2 sex chromosomes

Human somatic cells contain 22 pairs of autosomes and either two X chromosomes (in females) or an X and a Y chromosome (in males).

8

Which is the smallest unit containing the entire human genome?

one human somatic cell

9

For what purpose(s) might a karyotype be prepared?

for prenatal screening, to determine if a fetus has the correct number of chromosomes

to determine whether a fetus is male or female

to detect the possible presence of chromosomal abnormalities such as deletions, inversions, or translocations

10

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

sporophyte

The sporophyte is the diploid, multicellular stage of the plant that produces haploid spores by meiosis.

11

How are sister chromatids and homologous chromosomes different from each other?

Homologous chromosomes contain the same gene loci but may have different alleles of a particular gene. Sister chromatids are identical copies of each other produced during DNA replication.

12

Which of the following is a true statement about sexual vs. asexual reproduction?

In sexual reproduction, individuals transmit 50% of their genes to each of their offspring.

13

Which of the following is true of a species that has a chromosome number of 2n = 16?

Each cell has eight homologous pairs.

14

Which of these statements is false?

At sexual maturity, ovaries and testes produce diploid gametes by meiosis.

15

Referring to a plant's sexual life cycle, which of the following terms describes the process that leads directly to the formation of gametes?

gametophyte mitosis

16

Which of the following is an example of alternation of generations?

A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).

17

A triploid cell contains three sets of chromosomes. If a cell of a usually diploid species with 42 chromosomes per cell is triploid, this cell would be expected to have which of the following?

63 chromosomes in 21 sets of 3

18

Which of the following can utilize both mitosis and meiosis in the correct circumstances?

a plantlike protist

19

In a human karyotype, chromosomes are arranged in 23 pairs. If we choose one of these pairs, such as pair 14, which of the following do the two chromosomes of the pair have in common?

Length, centromere position, staining pattern, and traits coded for by their genes.

20
card image

Which of the life cycles is typical for animals?

I only

21

Which statement correctly describes how cellular DNA content and 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.

22

Meiosis I produces _____ cells, each of which is _____.

two ... haploid

23

Meiosis II typically produces _____ cells, each of which is _____.

four ... haploid

24

During _____ sister chromatids separate.

anaphase II

Anaphase II is essentially the same as mitotic anaphase except that the cell is haploid.

25

At the end of _____ and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids.

telophase I

26

Synapsis occurs during _____.

prophase I

27

Homologous chromosomes migrate to opposite poles during _____.

anaphase I

28

During _____ chromosomes align single file along the equator of a haploid cell.

metaphase II

29

At the end of _____ and cytokinesis there are four haploid cells.

telophase II

30

During _____ a spindle forms in a haploid cell.

prophase II

31

Genetic variation occurs when chromosomes are shuffled in fertilization and what other process?

meiosis

32

Heritable variation is required for which of the following?

evolution

33

A human cell containing 22 autosomes and a Y chromosome is

a sperm.

34

Meiosis II is similar to mitosis in that

sister chromatids separate during anaphase.

35

Homologous chromosomes move toward opposite poles of a dividing cell during

meiosis I.

36

Which life cycle stage is found in plants but not animals?

multicellular haploid

37

If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of the same cell at metaphase of meiosis I would be

2x.

38

If we continued to follow the cell lineage from question 5, then the DNA content of a single cell at metaphase of meiosis II would be

x.

39

How many different combinations of maternal and paternal chromosomes can be packaged in gametes made by an organism with a diploid number of 8 (2n = 8)?

16

40

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

Spores
Gametes (sperm and eggs)

41
card image

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

This cell is diploid.

42

What is the best evidence telling you whether this cell is diploid or haploid?

The cell is diploid because it contains two sets of chromosomes.

43
card image

This chromosome has two chromatids, joined at the centromere. What process led to the formation of the two chromatids?

The two chromatids were formed by duplication of a chromosome.

44

Two sister chromatids are joined at the centromere prior to meiosis. Which statement is correct?

Barring mutation, the two sister chromatids must be identical.


Related pages


capnophilic bacteria examplesconnect anatomy and physiology answersillustration of mitosis and meiosisorganelles in blood cellspacific railway act apushbeadle & tatumchapter 7 the skeletonsigmund freud emphasized the importance ofkidney dermatomefunction of the testesbooks on money and bankinghow many chromosomes are in a human cellgeographic preference mcdonaldswhat is a butte landformskeletal muscle fibers are formed from embryonic cells calledhormone chartorganelles involved in protein productionchapter 9 cellular respiration chapter test aabiotic factors of savannawhere did miguel hidalgo livemembranous envelopehow does true motility differ from brownian movementwhich of the following statements about hadley cells is truename the reactants of photosynthesisacid fast mycobacteriause the given frequency distribution to find the class widthkirby bauer disk diffusion methodfundamentals of anatomy and physiologyskeleton vertebral columnwhat are gram reactions of clostridium and bacillusunwind chapter questionsprinciple of complementarity of structure and functionneuron anatomy and physiology exercise 13 answersprophase characteristicsan example of a protist intestinal parasite would beportal of entry for pathogensdescribe the systemic and pulmonary blood circulation routesgluteal tuberosity of femureasy notes anatomy and physiologyprednisone osteoarthritiswhy is an efferent neuron multipolarendocrine glands labeledthe hyoid bone is unique becausewhat is fluorines mass numbermultipolar neuronwhat is the role of pyruvate in cellular respirationthe light reactions of photosynthesis supply the calvin cycle withcampbell biology study guidesbioexamexplain catabolismspanish vocab quizglossopharyngeal nerve definitioncampbell biology 9th edition chapter 8classification of tissues answersthalamus hypothalamus and epithalamusa&p reviewear semicircular canalsadpistatementsnames of dna basescompare functionalism and conflict theoryheimlich maneuver for pregnantfacial muscles labeledconnective tissue ensheathing a bundle of muscle cellsquizlet anatomy and physiology digestive systemcentriole sizewhich of the following statements about joints is truetechniques used in mindfulness based stress reduction therapyin monopolistic competition each firmosteoblast structureto kill a mockingbird flashcardsdo bacterial cells have a cell wallfugitive slave law apushdiarrhea during examinstrument to examine the bladderwhat hormone stimulates ovulationstratum basale layer