genetics Flashcards

1
Q
A
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2
Q

sides of spiral made of

A

sugar and phosphate

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3
Q

stripes of spiral made of

A

A&T (two prime ends) and G&C (three prime end; stronger bond)

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4
Q

centromere

A

where chromatins connects and divides

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5
Q

chromatid

A

single

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6
Q

chromosome

A

plural

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7
Q

double stranded chromosone

A

after replication

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8
Q

2 types of chromosones

A

autosomes
sex chromosomes

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9
Q
A
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10
Q

which cell have membrane-bound nucleus and

A

eukaryotic

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11
Q

chromatin

A

cell genetic material in resting state

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12
Q

DNA functions

A

replication
protein synthesis

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13
Q

genetic codes

A

isolated instructions

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14
Q

meiosis

A

replication of reproductive cells

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15
Q

mitosis

A

replication of somatic cells

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16
Q

elongation 12:00

A
17
Q

mitosis

A
18
Q

meiosis

A
19
Q

nondisjunction

A

only 1 chromosome

20
Q

trisomy

A

3 chromosomes

21
Q

why is meiosis important for evolution

A

rapidly
provides variability for natural selection to act on

22
Q

protein synthesis

A

protein from amino acids
RNA

23
Q

RNA

A

different nucleotide; (U) will bind to A

24
Q

3 types of RNA

A

messenger - nucleus
transfer - cytoplasm (set of 3 nucleotides)
ribosomal - ribosomes

25
Q

steps in protein synthesis 12:25

A

1.

26
Q

mRNA

A
27
Q

tRNA

A
28
Q

rRNA

A
29
Q

substitution error

A

a nucleotide is substituted, but the following ones aren’t altered

30
Q

insertion error

A

extra nucleotide inserted, changing sequence after the insertion point (completely changing protein)

31
Q

deletion error

A

a nucleotide is deleted, changing sequence after that

32
Q

allele

A

code in a specific area (plural is genes)

33
Q

regulatory genes

A
34
Q

homeobox genes

A

ancient group of regulatory genes involved in determining patterns of anatomical development in utero (i.e. where limbs go); regulates gene expression and cell differentiation; phenotype

35
Q
A