here are approximately 4,740 species of frogs around the entire world. There are about 90 species of frogs in the United States. Unfortunately, about 120 amphibian species, including frogs, toads and salamanders, have disappeared since 1980.
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Answer:
Photosynthesis is the process by which plants make their own food in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and energy.
The process of photosynthesis has two types of reactions: light-dependent reactions and light-independent reactions.
The light-dependent reactions occur in the thylakoid membranes of chloroplasts in which plants use light energy to form ATP and the reduced electron carrier NADPH.
In this reaction, photosystem II (P700) absorbs lights energy and passed it to reaction center. this energy is then is transferred to photosystem I (P680), that pump an electron to a high energy level. The high-energy electron then travel to an electron transport chain and releases energy. this released energy pump H+ ions into the thylakoid interior from the stroma and build a gradient H+ ions move through gradient and they pass through ATP synthase resulting in the formation of ATP.
The higher energy electron as moves into an electron transport chain, the electron is passed to NADP+ to form NADPH.
Answer:
Most people give credit to Benjamin Franklin for discovering electricity. ... In 1752, Franklin conducted his famous kite experiment. In order to show that lightning was electricity, he flew a kite during a thunderstorm. He tied a metal key to the kite string to conduct the electricity.
Correct option a) (A) One-quarter will carry the two normal chromosomes, 4 and 12, one-quarter will have only the two translocation chromosomes and no normal chromosomes 4 and 12, and half will have one normal and one trans-located chromosome.
Genetic carrier screening , prenatal screening for aneuploidy and prenatal diagnostic testing have expanded dramatically over the past two decades. The presence of chromosome abnormalities in couples with repeated spontaneous abortion is known even if the phenomenon is far from a complete assessment.
If gene on chromosome or on different chromosomes the recombination frequency 50% . Inheritance of alleles at the two loci are independent.One partner is carries of such balanced translocation have increased risks of infertility , and the chromosomal abnormal offspring.
Genetic counselor should answer to their consultants is to estimate the probability of recurrence of unfavorable pregnancy outcomes among their future pregnancies. The occurrence probability for individual carriers of two different autonomy- Autosome translocation with breakpoints at different positions by stengel- Rutkowaski et.
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