wch 1.120exam #1 f 2/16 in wch 1.120 (bring cheat sheet) review th 2/15 at 5pm in tba homework #1...
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For life to exist, the information (genes) must be passed on. CB 13.5 {Mitosis: producing more cells} {Meiosis: producing gametes}TRANSCRIPT
•Exam #1 F 2/16 in WCH 1.120WCH 1.120(bring cheat sheet)•Review Th 2/15 at 5pm in TBA
•Homework #1 due at noon
CB 6.2
For life to exist, the information (genes) must be passed on.
CB 13.5
{Mitosis:producing more cells}
{Meiosis:producing gametes}
CB 5.27
DNA replication:Each strand serves as a template for producing a complementary copy, but the replication is not always perfect.
CB 12.5Cell Division
(AKA: DNA replication)
CB 12.4
Mitosis:A DNAPerspective
Mitosis plays a role in:• Growth and Development• Repair and Turnover of Cells• Reproduction
–Asexual
CB 12.2
Normally DNA is loosely packaged
During mitosis DNA is tightly packaged as chromosomes and
individually visible
CB12.6
CB 12.4
Mitosis:A DNAPerspective
CB 12.6
startofmitosis
Sexual reproduction creates genetic diversity by combining DNA from 2 individuals, but also by creating genetically unique gametes.
CB 13.5
{Mitosis:producing more cells}
{Meiosis:producing gametes}
CB 14.4
Gene forblue eye pigment
Gene forbrown hair pigment
Gene forgrowth hormone
Haploidchromosomes
Gene forhemoglobin
Gene forDNA polymerase
CB 14.4
Gene forhemoglobin
Gene forhair color
Gene forgrowth hormone
Allele forblack hair
Allele forblack hair
Allele forlow express(short)
Allele forhigh express(tall)
Allele for normal Hb
Allele forsickle cell Hb
Diploidchromosomes
CB 13.3
Each pair of chromosomes is comprised of a paternal and maternal chromosome
haploid
diploid
X 23in humans X 23
in humans
X 23in humans
Inheritance = The interaction between genes inherited from Mom and Dad.
Sexual reproduction creates genetic diversity by combining DNA from 2 individuals, but also by creating genetically unique gametes.
{Producing more cells}
{Producing gametes}
CB 13.5
CB 13.7
Meiosis splits apart the pairs of chromosomes.
X 23in humans
Crossing-over
Meiosis I
Meiosis II
(Ind. Assort.)
4 Haploid cells, each unique
Meiosis:In humans,over 1 trillion possible unique gametes.(1,000,000,000,000)
CB 13.9
CB 13.9 Differences between mitosis and meiosis
Mitosis only:extremely lowgenetic diversity
Meiosisand Mitosis:greater geneticdiversity
vs.Asexual Reproduction
SexualReproduction
Sexual reproduction creates genetic diversity by combining DNA from 2 individuals, but also by creating genetically unique gametes.
{Producing more cells}
{Producing gametes}
CB 13.5
haploid
diploid
X 23in humans X 23
in humans
X 23in humans
Inheritance = The interaction between genes inherited from Mom and Dad.