Biology review questions!?

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1.) Enzyme

2.) A series of three-nucleotide sequences called codons

3.) Trisomy 21 or Down syndrome

4.) Y and X chromosomes

5.) The uniting of a short length of stem of one plant onto the rootstock of a different plant. This is often done to produce a hardier or more disease resistant plant.

6.) On the sex chromosomes, X and Y

7.) Proving man evolved through the fish stage

8.) Sex is determined by the male X and Y cells (IE Male X or Y chromosome and Female a X chromosome)

9.) Consumers

10.) Mutations
 
1.)RNA polymerase is what type of organic compound?
2.)Genes are composed of _____.
3.)Name a genetic disorder that can be detected by karyotyping.
4.)Sex-linked traits are inherited from the ____ in males, and from ____ in females.
5.)Define grafting in plants.
6.)Sex-linked traits are carried on the ___ chromosome.
7.)Presence of gill-like slits in a human embryo is considered to be evidence for the theory that fish and mammals have a _____ ancestry.
8.)The sex of a human baby is usually determined by ______.
9.)What would have the greater biomass, producers or consumers?
10.)Radiation can cause ________ or changes in DNA.
 
1. protein
2. nucleotides

4. y chromosome in males and x chromosome in females

7. common
8. Amniocentesis or ultrasound
9.
10. mutations
 
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