Genetics Flashcards

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1
Q

What is a superscript

A

Specific dominant allele E°

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2
Q

Incomplete dominance

A

Red flower plus white flower makes pink flower

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3
Q

Codominance

A

Equal expression of both alleles!

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4
Q

Chromosome definition

A

Composed of dna and protein, consists of structures called genes

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5
Q

Phenotype

A

Physical appearance

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6
Q

Alleles

A

Genes that occupy same site on homologous chromosomes and control same trait

A variation of gene

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7
Q

Gregor Mendel

A

Garden peas, principles of inheritance, father

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8
Q

Locus

A

The location of a gene on a chromosome

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9
Q

Law of dominance

A

When to alternative forms of genes are present, one allele will mask the expression of the other

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10
Q

Law of segregation

A

During gamete formation pairs of alleles segregate from each other, and become incorporated into separate gametes, meiosis

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11
Q

Law of independent assortment

A

Which member of a pair of genes becomes included in a gamete, is determined by chance. This randomness occurs because of separation of pairs of homologous chromosomes during meiosis.

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12
Q

What does autosomal mean in recessive disorder pedigrees

A

Non sex

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13
Q

Three key points, indicating autosomal recessive pedigree

A
  1. Appears in offspring of unaffected parents.
  2. Affected offspring includes females and males.
  3. Two affected parents always have affected offspring.
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14
Q

X-linked recessive disorders key points

A
  1. None of the sons of an effective mail show the phenotype.
  2. Females get it when mother and father are affected. Where is male get it when only mother carries allele
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