The phenotypic proportions which would be expected if the genes for red eyes and for white-banded wings were located on different chromosomes are:
(a)
- 1⁄4 wild-type eyes, wild-type wings
- 1⁄4 red eyes, wild-type wings
- 1⁄4 wild-type eyes, white-banded wings
- 1⁄4 red eyes, white-banded wings
<h3>What is the distance and rate of recombination?</h3>
The distance between the genes is four map units.
The rate of recombination between the genes for red eyes and those for white-banded wings is 4%.
(b)
The F1 heterozygote inherited a chromosome with alleles for red eyes and white-banded wings (re wb) from one parent and a chromosome with alleles for wild-type eyes and wild-type wings (re+ wb+) from the other parent. These are therefore the phenotypes of the nonrecombinant progeny, present in the highest numbers. The recombinants are the 19 with red eyes, wild-type wings and 16 with wild-type eyes, and white-banded wings.
RF = recombinants/total progeny × 100% = (19 + 16)/879 × 100% = 4.0%
Read more about phenotype here:
brainly.com/question/902712
#SPJ1
Answer:
Natural selection
Explanation:
Natural selection is the process via which the frequency of adaptive mutations in the population increases. In adaptive mutations, the mutational changes that are caused through natural selection, make individual to survive better in that particular environment when passes through stress conditions like temperature, drought etc. through natural selection the fittest of all is selected (the one that had adapted in that environment).
Explanation:
For ATP production in the electron transport chain.
- a H+ concentration gradient is required for oxidative phosphorylation in the electron transport chain of the mitochondria, and thus the production of ATP
- the H+ ion gradient must favor the flow of electrons into the matrix of the mitochondria
Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge. At the mitochondrial membrane, the outer membrane freely allows for the passage of H+ while the inner membrane does not. Mitochondria require H+ concentration gradients to produce ATP; i.e. high concentrations of of H+ in the intermembrane space and low H+ within the mitochondrial matrix.
The H+ being pumped outside the mitochondrial matrix leads to increased H+ within the intermembrane space, due to its high permeability. This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP and inorganic phosphate, Pi.
Further Explanation:
During respiration in the mitochondria, oxidative phosphorylation occurs. This describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.
This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water.
Learn more about cellular life at brainly.com/question/11259903
Learn more about cellular respiration at brainly.com/question/11203046
#LearnWithBrainly
Answer:
They both believed that continuous and gradual change is law of nature
Explanation:
Charles Lyell's “Principles of Geology “ encouraged Charles Darwin to think of evolution of living organisms as a slow process just like the slow geological processes taking place since millions of years. As per Charles, the slow and little contribution of continuous geological events shaped the present geological attributes of the earth. Likewise Charles Darwin’s theory of evolution also earmarked accumulated effects of small gradual changes over immense spans of time. They both believed that continuous and gradual change is law of nature.
Answer:
interphase
Explanation:
One “turn” or cycle of the cell cycle consists of two general phases: interphase, followed by mitosis and cytokinesis. Interphase is the period of the cell cycle during which the cell is not dividing.