DISCOVERING THE LIFE SPAN BY JOHN W
SANTROCK CHAPTER 1 TO 10 ACTUAL EXAM
PAPER 2026 QUESTIONS SOLUTIONS GRADED
A+
◉ Gametes.
Answer: As the male and female reproductive cells are also called,
contain huge amounts of genetic information.
◉ Zygote.
Answer: The new cell formed by the process of fertilization.
Combination of genetics over 2 billion chemically coded messages.
◉ Genes.
Answer: The basic unit of genetic information.
◉ Chromosomes.
Answer: Arranged in a specific order along 46 chromosomes. Rod-
shaped portions of DNA that are organized in 23 pairs. Each of the
sex cells--ovum and sperm contains half this number.
◉ Mitosis.
,Answer: cell division in which the nucleus divides into 2 nuclei
containing the same number of chromosomes
◉ Meiosis.
Answer: Cell division that produces gametes
◉ Monozygotic twins.
Answer: Twins who are genetically identical.
◉ Dizygotic twins.
Answer: Twins who are produced when two separate ova are
fertilized by two separate sperm at roughly the same time.
◉ Gregor Mendel.
Answer: The father of genetics - Experimented with pea plants
◉ Dominant trait.
Answer: The one trait that is expressed when two competing traits
are present.
◉ Recessive trait.
Answer: A trait within an organism that is present, but is not
expressed.
, ◉ Genotype.
Answer: The underlying combination of genetic material present
(but not outwardly visible) in an organism.
◉ Phenotype.
Answer: An observable trait; the trait that is actually seen.
◉ Homozygous.
Answer: Inheriting from parents similar genes for a given trait
◉ Heterozygous.
Answer: Inheriting from parents different forms of a gene for a given
trait.
◉ Allele.
Answer: one of the alternative forms of a gene that governs a
characteristic, such as hair color
◉ Phenylketonuria (PKU).
Answer: An inherited disorder in which a child is unable to make use
of phenylalanine, an essential amino acid present in proteins found
SANTROCK CHAPTER 1 TO 10 ACTUAL EXAM
PAPER 2026 QUESTIONS SOLUTIONS GRADED
A+
◉ Gametes.
Answer: As the male and female reproductive cells are also called,
contain huge amounts of genetic information.
◉ Zygote.
Answer: The new cell formed by the process of fertilization.
Combination of genetics over 2 billion chemically coded messages.
◉ Genes.
Answer: The basic unit of genetic information.
◉ Chromosomes.
Answer: Arranged in a specific order along 46 chromosomes. Rod-
shaped portions of DNA that are organized in 23 pairs. Each of the
sex cells--ovum and sperm contains half this number.
◉ Mitosis.
,Answer: cell division in which the nucleus divides into 2 nuclei
containing the same number of chromosomes
◉ Meiosis.
Answer: Cell division that produces gametes
◉ Monozygotic twins.
Answer: Twins who are genetically identical.
◉ Dizygotic twins.
Answer: Twins who are produced when two separate ova are
fertilized by two separate sperm at roughly the same time.
◉ Gregor Mendel.
Answer: The father of genetics - Experimented with pea plants
◉ Dominant trait.
Answer: The one trait that is expressed when two competing traits
are present.
◉ Recessive trait.
Answer: A trait within an organism that is present, but is not
expressed.
, ◉ Genotype.
Answer: The underlying combination of genetic material present
(but not outwardly visible) in an organism.
◉ Phenotype.
Answer: An observable trait; the trait that is actually seen.
◉ Homozygous.
Answer: Inheriting from parents similar genes for a given trait
◉ Heterozygous.
Answer: Inheriting from parents different forms of a gene for a given
trait.
◉ Allele.
Answer: one of the alternative forms of a gene that governs a
characteristic, such as hair color
◉ Phenylketonuria (PKU).
Answer: An inherited disorder in which a child is unable to make use
of phenylalanine, an essential amino acid present in proteins found
