The process of joining of a sperm cell and an egg cell is called...
What percentage of chromosomes are handed down by a sperm cell to the zygote during fertilization?
Human reproduction is a type of Sexual reproduction because _____
What is an advantage of sexual reproduction?
The continued growth of embryo inside the uterus is a result of
A dog has 78 chromosomes in its body cells. What is the diploid number? (vocab: diploid -means combined chromosomes from sperm and egg cells- called diploid)
A Goat has 60 chromosomes in its body cells. What is the haploid number? (vocab: haploid means chromosome number found in sex cells)
Placenta develops in the uterus. Identify which statement least likely serves the function of placenta?
Offspring that results from meiosis and fertilization each have
Which developmental process is represented by the diagram?
Removal of one ovary from a human female would most likely
Which substance usually passes in the greatest amount through the placenta from the blood of the fetus to the blood of the mother?
The diagram below represents a series of events in the development of a bird. Which series of terms best represents the sequence of processes shown?
The diagram below represents a series of events in the development of a bird. Describe the number of chromosomes found in zygote to the fully matured bird?
Some chemical interactions in a human are shown in the graph. This graph represents hormones and events in the...