Genetics calculation final Flashcards
C - dominant allele coding black fur
c - recessive allele coding red fur
What are the phenotypic and genotypic ratios in the progeny of:
a) Black homozygotic bulls & black homozygotic cows
C - dominant allele coding black fur
c - recessive allele coding red fur
What are the phenotypic and genotypic ratios in the progeny of:
b) Black homozygotic bulls & black heterozygotic cows
C - dominant allele coding black fur
c - recessive allele coding red fur
What are the phenotypic and genotypic ratios in the progeny of:
c) Black homozygotic bulls & red cows
C - dominant allele coding black fur
c - recessive allele coding red fur
What are the phenotypic and genotypic ratios in the progeny of:
d) Black heterozygotic bulls & red cows
C - dominant allele coding black fur
c - recessive allele coding red fur
What are the phenotypic and genotypic ratios in the progeny of:
e) Red bulls & red cows
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines white feathers – (only in homozygotes (blbl))
Blbl - blue feathers
What are the phenotypes of Andalusian fowls progeny:
a) black roosters and white hens,
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines white feathers – (only in homozygotes (blbl))
Blbl - blue feathers
What are the phenotypes of Andalusian fowls progeny:
b) black roosters and blue hens,
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines white feathers – (only in homozygotes (blbl))
Blbl - blue feathers
What are the phenotypes of Andalusian fowls progeny:
c) white roosters and blue hens,
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines white feathers – (only in homozygotes (blbl))
Blbl - blue feathers
What are the phenotypes of Andalusian fowls progeny:
d) blue roosters and blue hens.
C – Black fur determining allele
c – Red fur determining allele
S – plain colour determining allele
s – patched colour pattern determining allele
What will be the phenotypes (and ratios) after matting the cattle with following genotypes:
a) CCSS x Ccss
C – Black fur determining allele
c – Red fur determining allele
S – plain colour determining allele
s – patched colour pattern determining allele
What will be the phenotypes (and ratios) after matting the cattle with following genotypes:
b) CcSs x ccSs
C – Black fur determining allele
c – Red fur determining allele
S – plain colour determining allele
s – patched colour pattern determining allele
What will be the phenotypes (and ratios) after matting the cattle with following genotypes:
c) CcSs x Ccss
C – Black fur determining allele
c – Red fur determining allele
S – plain colour determining allele
s – patched colour pattern determining allele
What will be the phenotypes (and ratios) after matting the cattle with following genotypes:
d) CCss x CcSs
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines black feathers – (only in homozygotes (blbl))
Heterozygotes (Blbl) have blue feathers
F – determines frizzled (curly) feathers (only in homozygotes (FF))
f – determines smooth feathers – (only in homozygotes (ff)
Heterozygotes (Ff) express trait which is an average between homozygotes –
lightly frizzled feathers
You have a herd of andalusian fowl composed of 50% white and 50% blue hens. What are the phenotypes ratios in F1 progeny after the herd was mated with:
a) black roosters,
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines white feathers – (only in homozygotes (blbl))
Heterozygotes (Blbl) have blue feathers
F – determines frizzled (curly) feathers (only in homozygotes (FF))
f – determines smooth feathers – (only in homozygotes (ff)
Heterozygotes (Ff) express trait which is an average between homozygotes –
lightly frizzled feathers
You have a herd of andalusian fowl composed of 50% white and 50% blue hens. What are the phenotypes ratios in F1 progeny after the herd was mated with:
b) white roosters,
Bl – determines black feathers (only in homozygotes (BlBl))
bl – determines black feathers – (only in homozygotes (blbl))
Heterozygotes (Blbl) have blue feathers
F – determines frizzled (curly) feathers (only in homozygotes (FF))
f – determines smooth feathers – (only in homozygotes (ff)
Heterozygotes (Ff) express trait which is an average between homozygotes –
lightly frizzled feathers
You have a herd of andalusian fowl composed of 50% white and 50% blue hens. What are the phenotypes ratios in F1 progeny after the herd was mated with:
What would be the ratios, if the herd was composed of 25% white and 75% blue
hens?
