1What term refers to the thread-like structures in the nuclei of cells that contain genetic material?
Chromosomes
2What term refers to the first 22 pairs of chromosomes?
Autosomes
3What term refers to the 23rd pair of chromosomes? (Determines the child’s sex)
Sex Chromosomes
4What term refers to a molecule composed of four nucleotide bases, the biochemical basis of heredity?
DNA
5What term refers to the group of nucleotide bases that provide a specific set of biochemical instructions?
Gene
6What term refers to a person’s hereditary makeup?
Genotype
7What term refers to the physical, behavioral, and psychological features that result from the interaction between one’s genes and the environment?
Phenotype
8What term refers to a variation of genes?
Alleles
9What term refers to when the alleles in a pair of chromosones are the same?
Homozygous
10What term refers to when the alleles in a pair of chromosomes differ from each other?
Heterozygous
11What kind of allele’s chemical instructions are followed?
Dominant Alleles
12What allele’s instructions are ignored in the presence of a dominant allele?
Recessive Allele
13What disorder has individuals show signs of mild anemia?
Sickle Cell
14What inherited disorder has infants lacking a liver enzyme?
PKU
15What type of progressive, fatal type of dementia is caused by dominant alleles?
Huntington’s Disease
16What branch of genetics studies the inheritance of behavioral and psychological traits?
Behavioral Genetics
17What term refers to when phenotypes are the result of the combined activity of many separate genes?
Polygenic Inheritance
18What variety of twins results from a single fertilized egg to form two new individuals?
Monozygotic Twins
19What variety of twins results from two separate eggs fertilized by two sperm? (Fraternal)
Dizygotic Twins