Biology Review-Genetics Flashcards

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1
Q

Mendel

A

The father of genetics

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2
Q

Gene

A

A segment of DNA on a chromosome

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3
Q

Alleles

A

Different kinds or forms of a gene

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4
Q

Dominant allele

A

An allele that masks another allele

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5
Q

Recessive allele

A

An allele that is masked by another allele

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6
Q

Monohybrid cross

A

Cross between two individuals involving one trait

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7
Q

Dihybrid cross

A

Cross between two individuals involving two traits

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8
Q

Genotype

A

The genetic makeup of an organism

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9
Q

Phenotype

A

The outward appearance of an organism

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10
Q

Homozygous

A

Both pairs of alleles are the same

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11
Q

Homozygous dominant

A

TT

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12
Q

Homozygous recessive

A

tt

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13
Q

Heterozygous

A

Both pairs of alleles are different (Tt)

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14
Q

Mitosis

  • what kind of cells
  • how many times the parent cell divides
  • genetically identical or different
  • number of chromosomes is same or half
A

Body, once, identical, same

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15
Q

Meiosis

  • what kind of cells
  • how many times the parent cell divides
  • genetically identical or different
  • number of chromosomes is same or half
A

Sex, twice, different, half as many

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16
Q

Gametes or sex cells

A

the egg and sperm

17
Q

Body cells

A

all of the cells that are not body cells

18
Q

Diploid

A

two sets of chromosomes, 46,2n, homologous chromosomes

19
Q

Haploid

A

one set of chromosomes,23,n or 1n

20
Q

Law of segregation

A

Each parent only gives one gene to their offspring

21
Q

Law of independent assortment

A

Genes for different traits are inherented separately