mRNA is transcribed from DNA.The nucleotide in mRNA code for amino acids.tRNA translates the mRNA sequence into an amino acid sequence so proteins can be made.
Answer: The statement which summarizes the law of segregation is as follows :
During the process of gamete formation, two different forms of a gene ( also called allele) segregate from one another in a random manner and each gamete thus formed, receives one copy of gene.
This is called the law of segregation. It was proposed by Gregor Mendel.
For example- The gene for plant height in pea exists in two forms which are T ( dominant allele- represents tall height ) and t ( recessive allele- represents dwarf height ). If a plant is heterozygous ( having different alleles Tt), it will give two different gametes ( T and t ) during gametogenesis.
These alleles are segregated in accordance with the law of segregation.
The Law of Segregation states that paired genes separate evenly into gametes during meiosis, giving offspring equal chances of inheriting either gene. This observation, derived from experiments with pea plants, is the basis for predicting offspring traits using a Punnett square. The mechanism enforcing this law is the first division of meiosis, though this was not understood during Mendel's lifetime.
The Law of Segregation, proposed by Gregor Mendel, states that paired genes (unit factors) separate or segregate equally into gametes (eggs or sperm) during meiosis. This means that offspring have equal chances of inheriting either gene from their parents. Observations from experiments with true-breeding pea plants led to this law. For instance, the F1 generation expressed the dominant trait while the F2 generation exhibited both dominant and recessive traits in a 3:1 ratio. This segregation of alleles is what allows for accurate predictions of offspring traits using a Punnett square.
Gametes receive one allele from each parent, resulting in three possible combinations for the F2 generation from a monohybrid cross: homozygous dominant, heterozygous, and homozygous recessive. Heterozygotes can result from two pathways, receiving one dominant and one recessive allele from either parent, which alongside homozygous dominant individuals, are phenotypically identical, hence supporting Mendel's observed 3:1 phenotypic ratio.
The physical basis of the law of segregation is the first division of meiosis where homologous chromosomes bearing different versions of each gene segregate into daughter nuclei. This underlining mechanism, however, was not understood by the scientific community during Mendel's lifetime.
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The correct option is mRNA......................................................
Answer: the answer is D
Explanation:
b)While exercising, Julia's heart rate and breathing increase to balance the increased oxygen use by her muscle cells.
c) On a hot day, to prevent dehydration, Martin’s kidneys remove very little water from his blood.
d)After eating a candy bar, April's pancreas secretes insulin, which removes the excess blood sugar.
Answer:
a) After plunging into icy-cold water, Gary's core body temperature rapidly drops.
Explanation:
Homeostasis is the process by which our bodies find and reach equilibrium, could be physical or chemical, when you get into icy-cold water, for there to be homeostasis your body should get hotter in order to keep its normal temperature, but often the body tempereature just drops because there´s not much the vody can do against that.
b. Carbon monoxide and sulfur oxides are common air pollutants.
c. Natural components of air, like carbon dioxide, cannot be considered air pollutants.
d. Primary and secondary pollutants are harmful to human health and the environment.
Answer: c) Natural components of air, like carbon dioxide, cannot be considered air pollutants.
Explanation:
Carbon dioxide plays a role as greenhouse gas. Though living being emit carbon dioxide when they breathe, carbon dioxide is considered as a pollutant when associated with cars, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas.
Answer:
The answer is A in spring and summer
Explanation: