Answer:
The results are not able to be reproduced.
Explanation:
Generally, if an experiment is done and the results/similar results can not be reproduced then it can be considered invalid.
Answer:
Megavirus chilensis was the largest discovered
Explanation:
Megavirus chilensis is more commonly referred to as just “Megavirus”. Until the discovery of pandoraviruses in 2013, it had the largest capsid diameter of all known viruses, as well as the largest and most complex genome among all known viruses.
Answer:
PPTt
Explanation:
Let the gene for flower colour be denoted by P. P is the dominant allele and produces purple colour, p is the recessive allele and produces the recessive colour. Let the gene for stem height be denoted by T. T is the dominant allele and produces tall stem, t is the recessive allele and produces short stem.
A test cross was done which means that one of the parents was homozygous recessive for both the traits i.e. pptt
In the progeny all the flowers had purple colour which is only possible if the test parent was homozygous dominant for the trait i.e. it was PP
PP x pp :
P P
p Pp Pp
p Pp Pp
As evident, all the flowers will have Pp genotype and hence purple colour.
In the progeny, around half of the flowers had tall stems and half had short stems. This is only possible if the test parent was heterozygous for the trait i.e. it was Tt
Tt X tt :
T t
t Tt tt
t Tt tt
As evident, half plants have Tt genotype so they will have tall stems. Half of them have tt genotype hence will have short stems.
Hence, combining the genotype for two traits we obtain the genotype PPTt of the original test pea plant.
