V L6: Mendelian Genetics Flashcards
whats a chromosome?
dense packets of DNA by which hereditary information is passed from one generation to the next
whats a autosome?
any chromosome other than a sex chromosome
whats a allele?
alternative forms of a gene/marker at a specific genetic location
whats a locus?
a specific genetic location of a gene or a genetic marker
When did Mendel publish his findings?
1865
what did Mendel do?
Mendel conducted a series of simple cross breeding experiments on the common garden pea
How many trait did Mendel study?
7
A dominant phenotype can have two different genotypes, which are?
homozygous dominant and heterozygous
A recessive phenotype has only one possible genotype , which is?
homozygous recessive.
what is mendels first law?
The law of segregation of alleles. Each parent 1 copy of gene to offspring, parent has two alleles each will be passed on in equal proportions.
what is mendels second law?
The principle of independent segregation of alleles.
Independent assortment of two genes predicts a ________ phenotype ratio
9:3:3:1
Where di-hybrid crosses do not give the expected genotype and phenotype ratios, there is evidence of?
genetic linkage
Genes that are very close together on a chromosome tend to be inherited as a single unit or ?
haplotype
1 round of DNA replication is followed by 2 successive divisions called?
meiosis I and II
