Select all of the answers that apply. examine the following rock strata. using the laws of biostratigraphy, which of the following statements are true about the relative ages of the rock layers and intrusion? intrusion a is older than all of the rock layers. layer b is older than intrusion a. layers c, d, and e are older than intrusion a. intrusion a is older than layers c, d, and e. without additional information, you cannot tell the relative ages of intrusion a and rock layers c, d, and e. layer b is older than layers c, d, and e.

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

14) whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.