Bio Principle Of Inheritance And Variation Exam
Questions And Answers
what are early applications of heredity - Ans 1. selective breeding
2. domestication
ex sahiwal cows punjab
define heredity - Ans transmssion of chars from parent to progeny
why pea used for exp - Ans 1. self pollinating
2. prod more fertile progeny
3. short life span
4. easy to emasculate+ artifical pollinate
5. many contrastig traits
why mendal, what did he do different? - Ans 1. applied math along w sci
2. used large sampling sizes, gavegreater credibilty
what are true breeding lines - Answer breeds showing stable trait inheritance for many
gen ( homozygous for a spec trait)
what are some contrasting traist studied by mendel - Answer 1. colour of seed
2. shape of seed
3. height of plant
4. color of flower
, what are alleles - Answer genes coding for pair of contrasting traits
what are genes - Answer units of inheritance, contain all info required to express a trait
define monohybrif cross - Answer where one type of contrasting character is
considered
whats punett square - Answer a graphical representationused to cal probabilty of a trait
in offspring
whats a test cross - Answer organism w dominant (unknown genotype) crossed w
recesive parent
state law of dominance - Answer 1. chars controled by factors
2. factors are in pairs
3. in a dissimilar pair, one doms one recs
state law of segregateion - Answer 1. aleles dontblend
2. parents cont two allenes but alles segregae such that only one of the pair is passed
down to gammete from each parent
which is considered dominan and recessive - Answer whichever trait is expressed
(phenotype) is the dom, the quiet one is rec
what is incomplete dominance - Answer the filial progen foesnt resempbe either parent,
instead somewhere in bw
what is codominance - Answer f1 gen resembles both parents
Questions And Answers
what are early applications of heredity - Ans 1. selective breeding
2. domestication
ex sahiwal cows punjab
define heredity - Ans transmssion of chars from parent to progeny
why pea used for exp - Ans 1. self pollinating
2. prod more fertile progeny
3. short life span
4. easy to emasculate+ artifical pollinate
5. many contrastig traits
why mendal, what did he do different? - Ans 1. applied math along w sci
2. used large sampling sizes, gavegreater credibilty
what are true breeding lines - Answer breeds showing stable trait inheritance for many
gen ( homozygous for a spec trait)
what are some contrasting traist studied by mendel - Answer 1. colour of seed
2. shape of seed
3. height of plant
4. color of flower
, what are alleles - Answer genes coding for pair of contrasting traits
what are genes - Answer units of inheritance, contain all info required to express a trait
define monohybrif cross - Answer where one type of contrasting character is
considered
whats punett square - Answer a graphical representationused to cal probabilty of a trait
in offspring
whats a test cross - Answer organism w dominant (unknown genotype) crossed w
recesive parent
state law of dominance - Answer 1. chars controled by factors
2. factors are in pairs
3. in a dissimilar pair, one doms one recs
state law of segregateion - Answer 1. aleles dontblend
2. parents cont two allenes but alles segregae such that only one of the pair is passed
down to gammete from each parent
which is considered dominan and recessive - Answer whichever trait is expressed
(phenotype) is the dom, the quiet one is rec
what is incomplete dominance - Answer the filial progen foesnt resempbe either parent,
instead somewhere in bw
what is codominance - Answer f1 gen resembles both parents
