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6. DNA strands are polymers made up of lots of repeating units called ..?
- gametes
- enzymes
- nucleotides
- amino acids
7. what type of reproduction has the disadvantage of possibly passing diseases to their offspring?
8. which of these are not part of a DNA strand?
- phosphate
- base
- sugar
- ribosomes
- nucleotide
9. what does homozygous mean?
- two of the same alleles
- two different alleles
10. what type of reproduction has the advantage of only one parent required?
11. what is the structure of DNA
- chromosomes
- amino acids
- double helix
- spiral
12. what does heterozygous mean?
- two different alleles
- two of the same alleles
13. what is the chance of male gametes (sperm) carrying the X chromosome?
14. what type of reproduction has the advantage of variation in the offspring?