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Flashcards in Punett and pedigree Deck (31)
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Define a gene

A segment of DNA

1

Define a karyotype

The number and visual appearance of the chromosomes in the nuclei

2

Down syndrome

Chromosome defect, extra copy of chromosome 21

3

Turner syndrome

Female is either partly or completely missing in X-chromosome

4

Klinefelter syndrome

Syndrome in which males have an extra X-chromosome

5

Mulligans chromosome

A pair of chromosomes that contain the same gene sequence

6

AutoZomes

Any chromosome that is not a sex chromosome

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What is a haploid

Having a single set of unpaired chromosomes

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What is a diploid

Two complete sets of chromosomes

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Fertilization

Fusion of male and female gametes

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Zygote

Fertilized gamete

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Gamete

Egg or sperm

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Meiosis

Cell division that results in four daughter cells

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Crossing over

Exchange of genes between Homologous chromosomes

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Nondisjunction

Failure of chromosomes to separate normally

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Alleles

One of the two or more alternative forms of a gene that arise by mutation

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Homozygous

Two identical jeans at the corresponding Loki of homologous chromosomes

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Heterozygous

Two or more different versions of alleles at least one of its jeans

18

Dominant traits

Treat that results from the expression of the dominant allele

19

Recessive trait

Trait that result from the expression up to recessive allele's

20

Genotype

Genetic makeup of an individual organism

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Phenotype

Characteristics of an individual

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Codominance

Two alleles equally expressed
Example: check her chickens

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Incomplete dominance

Mixing a blending of two phenotypes
Sample: read flour and white flower let you to make pink flower

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Multiple alleles

When more than two allele forms are present in the population
Example: blood type

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Pleoitrophy

When one allele has multiple effects
Example sickle cell and Coloration slashed cross side of Siamese cats

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Epistasis

A gene
at one locus affects/alters the phenotype expression of a gene add a second locus
Example: golden golden retrievers

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Polygenetic inheritance

Quantitive characteristics; edict of effect of 20 or more genes on a single phenotype
Sample: height and skin color

28

Sex linked traits

Genes attached to the chromosome
Example hemophilia and color blindness

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What is a carrier

Individual that has one copy of a recessive allele and does not exhibit the trait