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inysia [295]
3 years ago
7

If alleles of two different genes assort independently during gamete formation then what should be the phenotypic ratio in the F

2 generation according to Mendelian genetics?
Biology
1 answer:
Pepsi [2]3 years ago
6 0

Answer:

9:3:3:1

Explanation:

If alleles of two genes separate randomly during anaphase-I of meiosis, some new combinations of the alleles are formed in the gametes. A heterozygous genotype for two loci (let's support TtRr) produces a total of four types of gametes in 1:1:1:1 ratio (TR, Tr, tR, and tr). The random fusion of these gametes from two double heterozygous parents (TtRr x TtRr) gives a phenotype ratio of 9:3:3:1. Here, 9/16 F2 progeny exhibit dominant phenotype for both loci while 1/16 exhibits recessive phenotype for both the genes. Rest 3/16 and 3/16 F2 progeny express dominant trait for one gene and recessive for the other.

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6 0
3 years ago
A hairdryer uses 1500 J of electrical energy in 1 second. The hairdryer changes 1300 J of this to useful thermal energy in 1 sec
Katarina [22]

200 J of energy is wasted by the hair dryer.

Steps

  • The hairdryer is provided with 1500 J of electrical energy per second
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  • The remaining energy, 1500 - 1300 = 200 J is dissipated

Dissipated energy

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Thus, 200 J of energy is wasted by the hair dryer.

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4 0
2 years ago
What is a series of predictable changes that occur in an ecosystem that lead to the sustainability of life
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Sustainability refers to how a system remains biodiverse and productive over long periods of time. Succession is a series of predictable changes that occur in a community over time. After a fire, volcano, or other disaster, succession enables an ecosystem to recover.

7 0
3 years ago
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3 0
3 years ago
Researchers at the University of Georgia have evaluated trends in streamside forests in areas within roughly 400 feet of the sta
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Answer - <span>C) Trees and shrubs provide shade, which keeps the water temperature cooler. Lower temperatures allow the water to hold more oxygen, which in turn creates a healthier habitat for the trout.</span>

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3 0
3 years ago
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