The first law of thermodynamics states that -
b. energy can neither be created nor destroyed, but it can change from one form to another.
A domain is a taxonomic category above the kingdom level.
Answer:
The stress which occurs in the ecosystem are high temperature and salt concentration in the soil. So if the ecosystem has maximum biodiversity, there will be less affect on the ecosystem because the organisms which lives in that ecosystem show resistance against these stresses.
With the increase of biodiversity of the ecosystem, also increased the resistance against the stress and if the biodiversity decreases in the ecosystem, the ecosystem is greatly affected by the stress.
The answer is D, blood pressure between heartbeats
Answer:
When the purple progeny are selfed, both white and purple progeny result.
Explanation:
Mendel performed a monohybrid cross i.e. one which involves a single gene or character. This gene which Mendel called factor codes for flower colour in peas. After crossing the pea that produced purple flowers only i.e. homozygous (PP) with one that produces white flowers only i.e. homozygous (pp), he obtained a F1 offspring that has all purple flowers.
This observation led him to his law of dominance, where he stated that an allele is capable of masking the expression of another allele in the heterozygous. Mendel called the allele that masks the DOMINANT allele while the allele being masked, RECESSIVE allele. He then self-crossed the purple F1 offsprings to produce a F2 offsprings with a 3Purple: 1White phenotypic ratio.
This observation led him to propose the law of segregation, which states that the alleles of a gene will separate into gametes during gamete formation. Hence, this showed that the alleles for white colour of flower were present in the F1 offsprings but were phenotypically masked. They were later expressed in the F2 offsprings.
In a nutshell, the F1 offsprings produced were in a heterozygous state i.e combination of alternative forms of alleles (Pp). This alleles were separated into gametes during meiosis. This supports Mendel's conclusion that each F1 progeny contains two alternative forms of the flower colour gene.
