goog
what is incomplete dominance
2 phenotypes make a third
A tetrad has how many chromatids
4
how many chromosomes do humans have
46 (23 pairs)
what kinds of research practices did Mendel use?
Collected data, wrote about it, and crossed true breeding plants
can children inherit mitochondrial DNA from their fathers
No, only mothers
when does crossing over occur
Prophase 1
diploid
any cells of the body, besides sex cells
homologous chromosomes
are similar in structure
How does the environment genetically effect the traits of the butterfly
color of butterfly change due to temp
how could you test the genotype of a plant
cross, use punnett square
Heterozygous
different alleles
haploids are formed
during meiosis
genotype
genes responsible for genetic traits of a given organism
genes are
haploid
polygenic traits
many traits produced by several genes
Polygenetic
more than one gene affects its traits
multiple alleles
multiple forms of a gene are shown
what happens during crossing over
new combinations are produced, share and exchange pieces
crossing over effects which part of the chromosomes
opposite ends (further apart)
hair color
polygenic
meiosis
produces haploid
meiosis .... chromosome haploid numbers
reduces
Homozygous
same alleles
gamete
sex cell; an egg or a sperm cell
what happens during meiosis
sex cells form
trait
something you can inherit (influenced by genes and is expressed by the environment)
codominance
two dominant genes are expressed