Beginning of Heredity

Question 1

Sperm & Egg Unite

• SE –> U
• Zygote

Answer 1

The human egg and sperm unite, resulting in a zygote
- Zygote : a set of 23 paired chromosomes (46 in total)

Question 2

Autosomes

• 1st P –> C

Answer 2

The first 22 pairs of chromosomes

Question 3

Sex Chromosomes

• 23P
• Males
• Females

Answer 3

Sex chromosomes : 23rd pair determines the child’s sex
- Males: XY chromosomes
X from mother and Y from father
- Females: XX chromosomes
X from mother and X from father

Question 4

DNA & Gene

• IC –> AC, P & E
• GoDNA –> CI BU

Answer 4

DNA: an instructional code for cells to create amino acids, proteins, and enzymes
- Each chromosome consists of one DNA molecule

Gene: any group of DNA compounds creating instructions for a specific biochemical unit

Question 5

Genotype & Phenotype

• CSoG –> I
• CoGen & EI –> ET
  
  • P, B & Ps

Answer 5

• Genotype: complete set of genes one has inherited (internal)
• Phenotype: combination of genotype and environmental influences resulting in the expression of external traits
  a. Physical
  b. Behavioral
  c. Psychological

Question 6

Alleles

• DF –> GC
• A carries I –> Specific V

Answer 6

Alleles: different forms in which genes come
- Each allele carries instructions for a specific variation on a trait

Question 7

Homozygous alleles & Heterozygous alleles

• W AS –> BP CSG for T
• PC –> DV of T

Answer 7

• Homozygous Alleles : When alleles are the same, both parents have contributed similar genes for a trait
• Heterozygous Alleles : The parents have contributed different versions of the trait

Question 8

Dominant & Recessive

• D –> DA I followed
• R –> RA I followed O BA R

Answer 8

• Dominant Alleles : The dominant allele’s instructions are followed, but the recessive is ignored
• Recessive Alleles : Recessive instructions are followed only if both alleles are recessive

Question 9

Behavioral Genetics

• SI –> B & P traits

Answer 9

Studies the inheritance of behavioral and psychological traits

Question 10

Dizygotic & Monozygotic Twins

• D (F) - T from DE DS
• M (I) - T fromn 1 E & S

Answer 10

Dizygotic or fraternal: twins from two different eggs fertilized by two different sperm

Monozygotic or identical: twins from the union of one egg and one sperm that splits in two soon after conception

Question 11

Niche Picking

• S E –> Comp. GM

Answer 11

Seeking environments that are compatible with one’s genetic makeup

Ex : Bright children seeking intellectually stimulating environments