Three characteristics in beef cattle—body weight, fat content, and tenderness—are measured, and the following variance components are estimated: Body weight Fat content Tenderness VA 22 45 12 VD 10 25 5 VI 3 8 2 VE 42 64 8 VGE 0 0 1 In this population, which characteristic would respond best to selection? Explain your reasoning.

please dont copy ur answer from chegg since the answers there on this quiestion are not correct/reliable

Last summer you were walking in the woods when you stumbled upon a group of four tiny baby squirrels. You noticed that they all had different tail lengths. Curious, you decided to measure the tail lengths of the four squirrels. Their tail lengths were found to be: 30 mm, 38 mm, 32 mm, and 28 mm. The heritability for tails in squirrels is 0.33. (This is a fraction, not percent.) What is the variance due to the difference in environment (VE)? Round to two decimals and do not include units.

The two-tailed p-value associated with this test is 0.860. Should the null hypothesis be rejected? Is there sufficient evidence to suggest that there is a statistically significant difference between the two means in question? If we now wanted to know whether there was a difference in weight between those with a low NYHA class (1 and 2) and those with a high NYHA class (3 and 4), what p-value would you report?