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