Flashcards in Chapter 9 (Pt. 2) Deck (20):
Mendel’s Dihybrid Crosses
matings btwn. individuals, differ in TWO traits studied
-determine if different genes are inherited together OR independently
9:3:3:1 ratio of phenotypes observed in F2 generation convinced Mendel...
different genes are inherited independently
have SAME phenotypes as individuals of P generation
Recombinant Types - have phenotypes that COMBINE traits of...
individuals of P generation
Mendel’s Principle of Independent Assortment
-genes divide into gametes INDEPENDENTLY
-results ignored until rediscovered in 1900
Scientists discovered parallels btwn. distribution of chromosomes during ______ & the inheritance of genes, suggesting....
genes LINKED to chromosomes
Each body cell has 2 copies of each GENE & 2 copies of each __________
Pairs of alleles & pairs of homo chromosomes both segregate during ______ ______
Genes for different traits & NON homo chromosomes both...
assort INDEPENDENTLY during gamete formation
Gene interactions may obscure ________ ______
phenotype of heterozygote may be intermediate BTWN. homozygotes
2 alleles fully clear in hybrid
type A sugar appears on RBC
type B sugar appears on RBC
NO sugar appears on RBC
Major Histocompatibiltiy Complex
-have multiple alleles
-proteins cell surface help body tell own cells from bacteria
After an organ transplant immune system cells...
destroy cells w/foreign proteins
-SINGLE gene may determine many different PHENOTYPIC traits
ex. white tigers,
Genes are linked to