Answer:
a) All Walnut , Genotype - RrPp
b) Walnut : Rose: Single
1:1:2
Explanation:
Phenotype and their Genotype -
Walnut comb - R_ P_
Rose Comb - R_ pp
Pea Comb - rr P_
Single Comb - rr pp
a) RR PP * rr pp
All progenies will have genotype RrPp (Walnut Comb)
b) Rr Pp * rr pp
RrPp (4), Rrpp (4), rrpp (8)
Walnut : Rose: Single
1:1:2
1. Rhythm generators (SA node)
2. Conductive cells (node cells)
3. Contractile cells (myocardial cells)
Answer:
solute and solvents in a solution.
Explanation:
They both need to sunlight. They may rise up and cover another plant to get it. They also both need nutrition from the ground and they may need to expand there roots the get the right amount.
Answer:
Pollution.
Explanation:
Pollution is the extinction factors that cause the least extinctions because it has less effect on the population of that organisms. Due to pollution, some organisms die and decrease occur in the population while the rest move to another safe place and some lives in that environment produce resistance against that pollution and are able to live in that pollution so pollution is the factor that cause the least extinction.
