The X can possibly be the sex chromosome. Like for human female we have the XX chromosomes and when the allele is on the X chromosome we write as X with a R as the superscript on top right.
Answer:
A)
Hh * hh
Hh, Hh, hh, hh
Out of four two calves are horned. Thus ratio of horned calves is
B)
Hh * Hh
HH, Hh, Hh, hh
Out of four one calf is horned. Thus ratio of horned calf is
C)
Hh * hh
Hh, Hh,hh, hh
Out of four two are polled . Thus ratio of polled calves is
Explanation:
Allele for dominant polled /hornless cattle is H
Allele for recessive horned cattle is h
A) Polled bull X horned Cow A ----> horned calf
This signifies that the polled bull is heterozygous with genotype Hh
Hh * hh
Hh, Hh, hh, hh
Out of four two calves are horned. Thus ratio of horned calves is
B) Polled bull X polled Cow B ----> horned calf
Both Bull ad cow are heterozygous with genotype Hh
Hh * Hh
HH, Hh, Hh, hh
Out of four one calf is horned. Thus ratio of horned calf is
C) Polled bull X horned Cow C ----> polled calf
Hh * hh
Hh, Hh,hh, hh
Out of four two are polled . Thus ratio of polled calves is
Answer: B. Insulation. Carbs give you energy, store energy, insulates the body, and much more
Hope this helps :)
The government, makes decisions for environmental issues.