Which of the following statements is true? a) the genotype is the physical appearance of a trait. b) alleles, genes, and loci are different names for the same thing. c) the phenotype of a dominant allele is never seen in the f1 progeny of a monohybrid cross. d) a testcross can be used to determine whether an individual is homozygous or heterozygous for a dominant allele.

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3

Which term describes a normal value for something in the body? a. homeostasis b. set point c. feedback loop d. integration center

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.