Answer:
a) Genotype of each parent plant= Tt
b) Genotypes of parent plants= Tt and tt
Explanation:
a) In the first cross, the tall and short progeny was obtained in almost a 3:1 ratio (78: 27). This means that both the parent plants were heterozygous for the gene of plant height. The genotype of each of the parents was Tt. A cross between Tt and Tt gives following progeny ratio=
Tt x Tt = 3 tall (1/2 TT and 1/4 Tt) : 1 short (1/4 tt)
b) In the second cross, tall and short progeny was obtained in almost a 1: 1 ratio (121: 118). This means that one parent plant was homozygous recessive (tt) and the other was heterozygous dominant (Tt).
Tt x tt = 1 tall: 1 short.
I think it's "What is Dendrites" hope this helped :-)
The body was preserved because the body was frozen in the cold temperature of the Alps shortly after he died and remained frozen until it was found.
<h3>How is a body preserved?</h3>
It is common to observe that bodies are often preserved at a very low temperature hence the body was preserved because the body was frozen in the cold temperature of the Alps shortly after he died and remained frozen until it was found.
The reason why the AIDs virus which contains RNA, to insert into the DNA of a host of T-cells after the AIDs virus enters the cell is because of receptor proteins located on the surface of the virus.
The organism that lacks the ability to maintain their own metabolic pathways and can only reproduce inside of a host cell are the viruses.
The chemicals released by one type of immune cell to directly activate another type of immune cell are the cytokines.
Learn more about cytokines:brainly.com/question/12199920
#SPJ1
I think the answer is B because it happens slowly and through natural selection