291484
Description
Mind Map by lynda_ashford_25, updated more than 1 year ago
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Created by lynda_ashford_25
over 10 years ago
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Genes
- units of heredity that maintain their structural identity throughout generations. Genes come in
pairs and are bundled into 23 chromosomes
- Chromosome- strands of genes that also come in
pairs.
- 2 x chromosomes = female
- 1 x and 1 y chromosome = male
- Heterozygous-
unmatched pair of genes
on the two chromosomes.
Dominant genotype is
expressed as phenotype.
- Dominant genes-
gene expresses
itself in either
pairing
- Dominant genes-
gene expresses
itself in either
pairing
- Homozygous-
identical pair of
genes on the two
chromosomes.
Dominant or
recessive genotype is
expressed as
phenotype
- Recessive
genes- gene
requires full
pairing in
order to be
expressed.
- Recessive
genes- gene
requires full
pairing in
order to be
expressed.
- 2 x chromosomes = female
- Chromosome- strands of genes that also come in
pairs.
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