7th science chap 3
Terms
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- Genes
- Factors that control traits
- recessive allele
- is covered up by dominant alleles
- Hybrids
- having 2 different alleles for traits
- Purebred
- an organism that always produces offspring with the same form trait as the parent
- genetics
- the scientific study of heredity
- heredity
- passing of traits from parent to offspring
- genotype
- an organism's genetic makeup
- phenotype
- an organisms physical
- probablilty
- the likelyhood that something will happen
- codominance
- when alleles are neither dominant or recessive
- meiosis
- the process by which the number of chromasomes are reducd by 1/2 for form sperm and eggs
- are mutations always harmful?
- No - they can be either helpful, harmful or neutral
- homozygous
- having 2 identical alleles for a trait
- alleles
- different forms of genes
- traits
- physical characteristics
- Punnett Square
- a chart that shows possible genetic combinations
- chromosome theory of inheritance
- genes are carried from parent to offspring on chromosomes
- transfer RNA
- carries amino acids and then adds them to growing proteins
- Messenger RNA
- copies the coded message from the DNA to the nucleus