Explain the relationship between embryonic cell layers, gene expression, proteins, and cell differentiation

The embryo is under the influence of mechanical stress during its formation, the pressure exerted on a cell contributes to embryogenesis by promoting the expression of a fundamental gene in the differentiation of primitive embryonic tissues such as the mesoderm (one of the layers of the embryo).

Take the example of mesoderm, β-catenin, generally linked to E-cadherin, is a protein involved in cell junctions. A charge of 6 pN exerted on a cell is sufficient to remove the two proteins, thus allowing the migration of β-catenin towards the nucleus where it causes the coding of the mesodermic gene.

answer: the answer is b

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.