B) E. Coli bacteria
C) human brain cell
Answer:
A.
onion cell
Explanation:
Answer: The correct answer for the fill in the blank is- A) Nuclear power.
Renewable sources of energy are those resources that can be replenished or renewed naturally. They do not run off that is they are inexhaustible.
Example of renewable sources- Solar energy, wind energy, geothermal energy, hydro-power.
On the other hand, non renewable source of energy are exhaustible and can not be replenished naturally.
Nuclear power ( resulted due to heat produced in the fission of atoms) is non- renewable source of energy. This is because the fuel that is used in most of the nuclear fission reactions is uranium, which is found in fixed amount on earth.
Answer:
For short the answer im pretty sure the answer is C.
B. a fox
C. a cow
D. a mouse
Answer:
B. a fox
Explanation:
A secondary consumer is those that, to produce energy, consume primary consumers. Those are always herbivores or organisms that only eat autotrophic plants.
In this case, a rabbit and a cow are primary consumers.
The mouse is herbivores too.
The only option left is Fox.
Foxes eat other animals, they are carnivorous. This made the fox a secondary consumer.
If all of the individual in a generation receives one dominant allele and one recessive allele, then they will all show the dominant trait.
If they are bred, they will pass on the dominant allele to some of their offspring and recessive allele to others.
If an offspring receives two recessive alleles, it will show the recessive trait and therefore it will reappear.
When two true-breeding or homozygous individuals for dominant and recessive traits are crossed, the resultant is always a dominant trait. The recessive character appears in the following generation when the F1 progeny is self-crossed due to independent segregation and random fusion of gametes.
Further Explanation:
Consider Mendel's experiment on a pea plant in which he used the trait of height as tall and short. On self-pollinating the tall plants, the resulting progeny were all tall while when self-pollination was done for short plants, the resultants were all short. It was found that when true-breeding short (t) plants are bred with the true breeding tall (T) plants, the offspring results in all tall plants in the F1 generation. When this progeny is self-crossed, the F2 generation results in both tall and short plants in a 3:1 ratio.
Mendel stated that the traits are controlled by genes that are present in pairs of alleles. Each parent contributes the alleles in the pair. Allele 'T' is received from a tall parent while short parent contributes to allele’t’ and they together produce a tall plant. This is because the 'T' allele suppresses the expression of’t’ allele because of its dominant nature. Therefore,’t’ is a recessive allele, and 'T' is a dominant allele.
Cross between true-breeding tall (TT) and short (tt) plant:
Parents: TT x tt
Gametes: T x t
Progeny: Tt (tall, F1 generation)
When F1 generation is self crossed:
Parents: Tt x Tt
Gametes: T, t x T, t
Progeny: TT, Tt, Tt, tt
In the F1 generation,the recessive trait (short plant) was suppressed because of the dominance of the 'T' allele over the’t’ allele. In the following generation, the recessive trait reappeared because of the independent segregation of gametes and their random association with each other.
Learn More-
Answer Details:
Grade: High School
Chapter: Gene interaction
Subject: Biology
Keywords:
True-breeding, homozygous, genes, alleles, dominant, recessive, independent segregation, random fusion, gametes, progeny, F1 generation, F2 generation.
B. Healthy ecosystems
C. Pollution
D. Invasive species
Is it B?