Answer: within the first year, within the second year
Explanation:
Many toddlers start to sit, stand and walk by the age of 9 to 15 months of age. These are because of the changes that occur in the brain and the spinal cord. By the age of two the brain develops coordination with the muscles of the body and the infant establishes balance on the feet and hip muscles becomes strong that aids in achieving the squatting position.
C waning crescent and waxing crescent
Answer:
it enters the "main sequence" phase of its life
Explanation:
Answer:
air pressure, temperature clouds
Explanation:
I took the test and it was correct
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.
