B. Many combinations of traits were always inherited together.
C. Some combinations if traits were not passed to offspring.
D. The presence of one trait did not affect the presence of another.
The correct answer as to which observation of dihybrid cross led to Mendel's law of independent assortment would be the presence of one trait that did not affect the presence of another. The correct option would be D.
The law of independent assortment states that traits are inherited independently.
This means that one gene codes for one trait and genes do not influence each other. For example, a gene for eye color would be independently inherited from a gene for skin color.
Mendel arrived at this observation when he carried out a cross involving two traits. Each trait followed the same phenotypic ratio as if they were a monohybrid cross. It does not matter the number of trait involved in the cross, they never influenced each other.
More on the law of independent assortment can be found here: brainly.com/question/19412775
The right answer is C. +1 (for hydrogen).
The hydrogen atom can lose its single electron to give the H + ion, commonly referred to as the proton name. In fact, the atom which has lost its only electron is reduced to its nucleus, and in the case of the most abundant isotope 1H, this nucleus consists only of a proton. This name is not strictly correct if one takes into account the presence, although discrete (less than 0.02%), of the other isotopes. The name hydron is more general (we also say hydrogen ion, despite the possible confusion with the H- anion).
Answer:
C. +1 (for hydrogen).
Only a living organism exhibits all of the characteristics of life.
Answer:
True
Explanation:
All living things such as plant, animal, human being and micro-organisms on this planet are able to exhibit all characteristics of life such as breathing, movement , reproduction, sensation, growth, excretion, nutrition etc. on their own. They are made of living cells that specializes themselves to perform specific task.
Non living things are not able to exhibit all the above characteristics of living things as they are made up of dead molecules/atoms.
Thus, the given statement is true.
B.Meiosis produces recombinant chromosomes.
C.Meiosis begins with a diploid cell, but produces four haploid cells.
The statement 'Meiosis begins with a diploid cell and produces four haploid cells' justifies meiosis as a reduction division due to the transition from a cell with two sets of chromosomes to cells with a single set.
The statement that justifies meiosis as a reduction division is: 'Meiosis begins with a diploid cell and produces four haploid cells'. This statement acknowledges the reductional nature of meiosis: it essentially begins with a cell that contains two sets of chromosomes (diploid), and through a specific series of cell division stages, it results in four cells that each have a single set of chromosomes (haploid). While it's true that meiosis results in the formation of gametes and leads to recombinant chromosomes, the primary defining characteristic of meiosis as a reduction division is its transition from a diploid cell to haploid cells.
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