Chromosome

1
Chromosome numbers
Meiosis I
Meiosis II
PLANTS
Cell Development
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
2
N is called
3
What is haploid?
4
Organisms produced by asexual reproduction are
called
5
What are clones?
6
Haploid number of human chromosomes.
7
What is 23?
8

• Which phases of meiosis are diploid?

9
What are Prophase I, Metaphase I, Anaphase I and
Telophase I?
10
Describe 3 ways organisms reproduce asexually
11
What areBinary Fission-cells divide in
twoBudding-Buds grow and detachFragmentation-
Break into pieces
12

• Describe the change of chromosome number in a
  typical sexual life cycle

13
In meiosis diploid somatic cells produce haploid
gametes . Gametes unite during fertilization,
restoring the diploid number. The new individual
has a combinations of chromosomes from the two
gametes
14
Stage of Meiosis I that the cells split in to two.
15
What is telophase I?
16
Stage that crossing over occurs.
17
What is prophase I?
18
Two pair of homologous chromosomes paired during..
19
What is prophase I?
20
Describe crossing over, when does it occur and
what is the result.
21
Crossing over is when the chromatids of the
homologous chromosomes exchange information, by
crossing over. This happens during prophase I
and results in an exchange of genetic material
22
Describe the number of chromosomes in each stage
of Meiosis I.
23
Prophase I-diploid, Metaphase I-diploid,
Anaphase I-diploid, Telophase I-diploid (until
the cells separate
24
Number of cells at the end of Meiosis II
25
What is 4?
26
Are the cells of Meiosis II diploid, haploid or
both?
27
haploid
28
Describe the chromosomes at the end of meiosis.
29
4 Haploid and genetically different.
30
What does NOT happen between Telophase I and
Prophase II, that keeps the number of chromosomes
the same?
31
Interphase does not occur, thus replication does
not double the number of chromosomes.
32
Explain why only one egg is formed in meiosis in
humans.
33
4 cells are formed, but because the egg requires
a lot of cytoplasm the other 3 cells are not
usable, and are called polar bodies.
34
A cell with 10 chromosomes in Meiosis I, will
have __ chromosomes in each gamete at the end of
meiosis?
35
5
36
Fruit forms from the __ of the plant.
37
ovary
38
Where do the pollen grains develop?
39
anthers
40
List 4 adaptation of flowering plants to adapt to
different environments
41
1. Dominance of the diploid stage2. Evolution
of pollen w/out water3. Evolution of the
seed-protects the embryo4. Variety of seed
dispersal-
42
Explain double fertilization
43
In plants, the sperm and egg unite and another
sperm and 2 polar nuclei forming a tripliod
endosperm.
44
What is a zygote
45
Resulting cell of fertilization
46
Heart and blood vessels form from the ___ tissue
layer.
47
mesoderm
48
Emybryonic cells grow and divide and become
different from other cells is called
49
Differentiation
50

• The transformation of a tadpole to a frog is
  called.

51
Metamorphosis
52
Stiff rod that will form the backbone?
53
notochord
54
Explain the 3 germ layers
55
Ectoderm-outer layer of the gastrula-forms skin
and nervous systemMesoderm-middle layer-forms
the muscle and skeleton.Endoderm-inner
layer-tube for digestion