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Categories >> Sciences >> Biological Sciences >> Genetics


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what is the difference between back cross and test cross?
 Question Submitted By :: Genetics
I also faced this Question!!     Answer Posted By  
# 1
Test cross is the cross between recessive parent with one of
its progeny.

backcross is the crossing between any of its parents with
These tests are done normally to identify homozygosity among
the breeds.
Is This Answer Correct ?    76 Yes 13 No
# 2
back cross:- it is a cross between f1 individual with one
of its parent genotype.

test cross:-it is a type of back cross between f1
individual and homozygous recessive.
Is This Answer Correct ?    32 Yes 6 No
# 3
Back cross - crossing of hybrid (F1)either of its parents
(dominan / recessive).

AA x aa = Aa x AA / aa

Test Croos - Crossing of F1 with homozygous recessive

AA x aa = Aa x aa
Is This Answer Correct ?    22 Yes 3 No
M. A. Ansari
# 4
back cross-cross between any of the f1 generation offspring with any one of the two parents either the recessive or the dominant

test cross- cross that is being done between the f1 generation offspring with the recessive parent
This cross is being performed to confirm or check the genotype of f1 generation individual taken as sample for cross
Is This Answer Correct ?    8 Yes 1 No
Neha Katiyar
# 5
test cross: cross between the progeny and the recessive parent.

back cross: the cross between the progeny and either the
dominant or recessive parent
Is This Answer Correct ?    2 Yes 0 No
David Mbogo
# 6
back cross-in this type of cross,dominent character & no recessive characters appear in the progeny.
test cross-in this type of cross, dominent & recessive characters appear in equal number i.e 1:1 ratio
Is This Answer Correct ?    1 Yes 0 No
Renu Singh

Other Genetics Interview Questions
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Gene = cistron = intron + exon?   2
what are the 3 different types of point or gene mutations?   1
what is Translation ?   3
Is male child having more genital sequence as of father or mother?   2
how to represent "o" blood group?   2
In horses, B = black, b = brown, T = trotter, t = pacer. A black pacer mated to a brown trotter produces a black trotter offspring year after year. What are the probable genotypes?   1
The weight of the fruit of one variety of squashes is determined by three pairs of genes: AABBCC produces 6 lb squashes and aabbcc produces 3 lb squashes. Each dominant allele adds 1/2 lb tothe base weight (3 lb). If a pure breeding line that produced 6 lb squashes was crossed with a pure breeding line that produced 3 lb squashes, what would be the phenotypic ratio of the F1 and the F2?   1
How is an allele different from a gene?   4
In a cross AABBCC and aabbcc (P generation), what would be the frequency of AAbbCc in the F2 (assuming no linkage)?   1
what is a Genetic Disorder ?   1
In snapdragons tallness (T) is dominant to dwarfness (t). Red flowers are produced by RR and white flowers by rr but the heterozygous Rr is pink. A dwarf red snapdragon is crossed to a homozygous tall plant with white flowers. What is the phenotypic ratio of the F1? the F2?   1
What is gene expression   1
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