This would be the punnet square:
PT Pt pT pt
pt PpTt Pptt ppTt pptt
pt PpTt Pptt ppTt pptt
The dominant trait is hornless.
If this is correct, then the original bull is a heterozygote:
H = hornless
h = horned
Bull is Hh
Cross 1: Hh x hh (horned female) - offspring is hh (horned)
Cross 2: Hh x Hh (hornless female) - offspring is hh (horned)
Cross 3: Hh x hh (horned female) - offspring is Hh (hornless)
Cross 3 is the key to confirming this because the only way to get a hornless offspring would be if hornless is recessive.
Answer: The group of participants who are exposed to the independent variable. These participants receive or are exposed to the treatment variable.
Explanation:
Answer:
A physical change effects a substance physically. Examples include cutting, bending, dissolving, freezing, boiling, and melting.
A chemical change effects a substance chemically. Examples include burning, rusting, and digesting.
Hope this helps.
500 million for the first picture and for the text i guess it evolved physical reproductive body cells and parts that makes sexual reproduction change as itself as well as birth due to not only human nature but man made things as well, example: hospitals, medicine, chemicals, etc.
