Answer:
4
Explanation:
<em>The number of progeny expected to display the dominant phenotype for both the A and B genes should be 4.</em>
<u>A test cross usually involves crossing an individual whose zygosity is in doubt with an individual that is recessive for both alleles so as to ascertain the zygosity of the former.</u> Hence, for a test cross involving AaBb:
AaBb x aabb
Progeny:
4 AaBb
4 Aabb
4 aaBb
4 aabb
<em>Therefore, the number of progeny expected to display the dominant phenotype for both the A and B genes is 4.</em>
Answer:
The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.
With the advancement of technology, the development of biotechnology began. Biotechnology is defined as the use of living organisms for a specific purpose. The most familiar uses of biotechnology include pharmaceutical companies that create drugs for rare diseases, the transformation of biomass into fuel to power cars and buildings, and the use of enzymes to clean up oil spills.