Post on 06-May-2015
description
Part of the body/Trait Appearance
Type of hair StraightWavy or kinky
hair
Earlobes Attached Unattached
Color of the
skinLight or fair Dark
Hairline StraightWith widow’s
peak
Dimples With dimplesWithout
dimples
HandednessRight
handedness
Left
handedness
Nose High-bridged Low-bridged
How is the number of
chromosomes
maintained?
How are genes
organized?
How is a chromosome structurally designed to perform its functions?
Grade 7 and 8 Biology
Where are the chromosomes
found in a eukaryotic cell?
Chromosomes are made up of
what substances?
How will you describe the structure
of a chromosome in cells at
interphase stage?
During cell division, what happens
to the structure of chromosomes?
After mitosis, the 2 daughter cells
contains how many chromosomes?
After meiosis, the 4 daughter cells
contains how many chromosomes?
The single-stranded chromosome will
become double-stranded during what
phase of cell division?
In what type of cells does mitosis
occur ?DIPLOID [2N]
In what type of cells does meiosis
occur ?HAPLOID [N]
Storage 1
Expression of
Characters2
Transmit Information 3
Variation 4
“Cyto”kinesis
Interphase
“Karyo”kinesis
p arm
centromere
q arm
telomere
Sister chromatids
Is this chromosome threadlike or rod-shaped?
Is this chromosome single-strandedor double-stranded?
Where is the centromere of the chromosome?
[1] Protein[2] Nucleic Acid
HISTONE
Deoxyribonucleic
Acid
Complete the labels for complementary polynucleotide.
GENE?[structure?]
[3000 base pairs][3.2 billion
Nitrogenous Base]
Gene
Production of building
blocks
Production of Melanin
Amylase
Synthesis of Hemoglobin
Scientific breakthrough inspire us to explore the possibilities
of finding applications that can ultimately benefit people.
What are the practical
applications of
understanding chromosome number and gene functions?
Science and
Technology 9,
Page 77-78