Science L. 17-22 Flashcards Preview

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Flashcards in Science L. 17-22 Deck (12):
1

heredity

the passing of physical characteristics from offspring to parents

2

trait

the different form of a characteristic

3

genetics

the scientific study of heredity

4

alleles

different forms of a gene

5

dominant allele

always shows in the organsism when the allele is present

6

recessive allele

hidden whenever the dominant allele is present

7

Punnett Square

shows all the possible combinations of alleles that can result from a genetic cross

8

phenotype

physical appearance

9

genotype

genetic makeup

10

meiosis

when the number of chromosones is reduced by half to form sex cells

11

messenger RNA

copies coded message from the DNA in th nucleus

12

transfer RNA

carries animo acids the the ribosome and adds the, to the growing protein