<span>Ideally, sustainable development should preserve the environment and ecosystems while being continually implemented. For example, solar energy is sutainable because you can't spend it by using it. Oil is unsustainable becasue it will run out and you can't replenish it in time. Wind energy is also sustainable.</span>
Answer:
The correct answer is - the phenotypic ratio would be 9:3:3:1.
Explanation:
The two traits that are dominant are free earlobe and straight thumb that are denoted by the E and T on their alternative recessive alleles attached lobe and hitchhiker thumbs denoted by the e and t respectively. The heterozygous condition will be EeTt.
The cross between EeTt and EeTt will produce gametes ET, Et, eT, and et by each. The phenotypic ratio of the cross would be 9:3:3:1, which means 9 out of 16 offspring will be dominant in both trait, 3 will be free lobe and hitchhiker thumb, 3 will be straight thumb and attached earlobe, and 1 will be recessive in both traits. For the cross please check the attached image.
Thus, the correct answer is - the phenotypic ratio would be 9:3:3:1.
B, both chemical and biological factors are involved
Energy & Repair/Maintenance
AA, Aa, Aa, aa. So there would be three red and one white