What is occurring in step 1 in figure 34–3? fertilization formation of a zygote ovulation formation of a blastocyst

Skulls of (1) modern gorilla, (2) australopithecus afarensis, (3) homo erectus, (4) homo neanderthalensis, (5) homo sapiens based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ? (2 points)

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is