________________ Taking another look at DNA #1. DNA… A Quick Review #2.
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Transcript of ________________ Taking another look at DNA #1. DNA… A Quick Review #2.
Chromosomes come in ________________________
The other matching half comes from the ____________.
Half the chromosomes come from the ____________. #
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What are genes?
#6
Gene for eye color proteins
Gene for hair color proteins
Genes are _______________________________________________________________________________________
Different organisms have different ___________________.
Fruit fly DNA
Human DNA
#7
8 chromosomes (__________)46 chromosomes (__________)
All organisms have a certain number of chromosomes in their _____________ cells called the diploid number.
__________ (2n)= _____ set of chromosomes (DNA)
#8
Organism Diploid Number
Human 46 (23 pairs)
Corn 20 (10 pairs)
Dog 78 (39 pairs)
Chicken 78 (39 pairs)
Crayfish 200 (100 pairs)
All organisms only have half the number of chromosomes in their _________________ called the haploid chromosome number.
__________ (1n)= _____ set of chromosomes (DNA)
#9
Organism Diploid Number Haploid Number
Human 46 23
Corn 20 10
Dog 78 39
Chicken 78 39
Crayfish 200 200
Imagine a diploid human sperm and egg cell coming together…
46 Sperm (male sex cell) from Dad
Baby’s Body Cell
46Egg (female sex cell) from Mom
#10
Now, imagine a haploid sperm and egg cell coming together…
23 Sperm (male gamete) from Dad
Baby’s Body Cell
23Egg (female gamete) from Mom
#11