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Flashcards in Inheritance Deck (13)
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1
Q

Genotype

A

The genetic composition of an organism, which describes all the alleles it contains

2
Q

Phenotype

A

An organisms observable characteristics- results from the interaction of genotype and environment

3
Q

Gene

A

A length/ section of dna that codes for the production of a particular polypeptide

4
Q

Locus

A

Position on a chromosome of a particular gene

5
Q

Allele

A

A gene variant, occupies the same locus.

6
Q

Dominant

A

Expressed and affects an organisms phenotype even when present with the recessive allele

7
Q

Recessive

A

Only expressed when the dominant allele is absent

8
Q

Codominant

A

Two alleles that both contribute to the organisms phenotype to an equal extent

9
Q

Heterozygous

A

Having two different alleles of a gene

10
Q

Homozygous

A

Having two identical alleles of a gene

11
Q

Haploid

A

Half the number of chromosomes (one of each of the pairs of chromosomes found in the parent cell)
Gametes in meiosis

12
Q

Diploid

A

The full complement of chromosomes for the cell - total number of chromosomes in all of the homologous pairs)
Human cells in mitosis

13
Q

Homologous chromosomes

A

A pair of chromosomes, one maternal and one paternal, that have the same gene loci