Experience Human Development - Chapter 3 Exam Questions with Correct Answers Graded A+
Fertilization - Answers Process in sexual reproduction in which male and female reproductive cells join
to form a new cell
Ovulation - Answers Moment when an egg released from the ovaries into the womb is receptive for
fertilization.
Cilia - Answers Hairlike projections that extend from the plasma membrane and are used for locomotion
Dizygotic twins - Answers Also called fraternal twins; twin siblings that result from two separately
fertilized eggs and therefore are no more similar genetically than non-twin siblings.
Monozygotic Twins - Answers Also called identical twins; twin siblings that result from one zygote
splitting in two and therefore share the same genes
Semi-Identical - Answers 2 sperm cells fusing with a single ovum are more genetically similar than
dizygotic twins but less similar than monozygotic twins
Deoxyribonucleic acid - Answers A nucleic acid found in all living cells which carries the organism's
hereditary information
Genetic Codes - Answers the rule that describes how a sequence of nucleotides, read in groups of 3
consecutive nucleotides that correspond to specific amino acids; specifies the amino acid sequence of a
protein
Chromosomes - Answers Bodies within the nucleus made in DNA and proteins called the histones
Human Genome - Answers An international collaborative effort to map and sequence the DNA of the
entire human genome
Autosomes - Answers Any chromosome that is not a sex chromosome
Sex Chromosomes - Answers One of the 23 pairs of chromosomes in the human, contains genes that will
determine the sex of the individual
Wnt-4 - Answers A signaling molecule that appears to control the development of female
characteristics.
Dominant Gene - Answers A gene that is expressed in the offspring whenever it is present
Recessive Gene - Answers Gene that is hidden when the dominant gene is present
Dominant Inheritance - Answers A pattern of inheritance in which the phenotypic effect of one allele is
completely expressed within a homozygous and heterozygous genotype.
Alleles - Answers Different forms of a gene
Fertilization - Answers Process in sexual reproduction in which male and female reproductive cells join
to form a new cell
Ovulation - Answers Moment when an egg released from the ovaries into the womb is receptive for
fertilization.
Cilia - Answers Hairlike projections that extend from the plasma membrane and are used for locomotion
Dizygotic twins - Answers Also called fraternal twins; twin siblings that result from two separately
fertilized eggs and therefore are no more similar genetically than non-twin siblings.
Monozygotic Twins - Answers Also called identical twins; twin siblings that result from one zygote
splitting in two and therefore share the same genes
Semi-Identical - Answers 2 sperm cells fusing with a single ovum are more genetically similar than
dizygotic twins but less similar than monozygotic twins
Deoxyribonucleic acid - Answers A nucleic acid found in all living cells which carries the organism's
hereditary information
Genetic Codes - Answers the rule that describes how a sequence of nucleotides, read in groups of 3
consecutive nucleotides that correspond to specific amino acids; specifies the amino acid sequence of a
protein
Chromosomes - Answers Bodies within the nucleus made in DNA and proteins called the histones
Human Genome - Answers An international collaborative effort to map and sequence the DNA of the
entire human genome
Autosomes - Answers Any chromosome that is not a sex chromosome
Sex Chromosomes - Answers One of the 23 pairs of chromosomes in the human, contains genes that will
determine the sex of the individual
Wnt-4 - Answers A signaling molecule that appears to control the development of female
characteristics.
Dominant Gene - Answers A gene that is expressed in the offspring whenever it is present
Recessive Gene - Answers Gene that is hidden when the dominant gene is present
Dominant Inheritance - Answers A pattern of inheritance in which the phenotypic effect of one allele is
completely expressed within a homozygous and heterozygous genotype.
Alleles - Answers Different forms of a gene
