Period of the Zygote - Fertilization

What are the three periods of the zygote

• WHAT

• WHAT

• WHAT

What are the three periods of the zygote

• Fertilization

• Implantation

• Germ disk

Fertilization occurs in the WHAT

Fertilization occurs in the FALLOPIAN TUBE

Fertilization

• 24-30 hours = WHAT

• 36 hours = WHAT

• 48 hours = WHAT

• 3 days = WHAT

• 4 days = WHAT

Fertilization

• 24-30 hours = Chromosomes combine

• 36 hours = zygote divides into 2 cells

• 48 hours = 4 cells

• 3 days = 16-32 cells

• 4 days = Blastocyst of 100 cells

Genetic development

• Karyotype = WHAT chromosomes

• Sperm and ovum = WHAT chromosomes

Genetic development

• Karyotype = 46 chromosomes

• Sperm and ovum = 23 chromosomes

Genetic development

• Not WHAT of grandparents

• WHAT combinations

Genetic development

• Not REPLICAS of grandparents

• INFINITE combinations

Traits

• Traits/Alleles coded WHAT

Traits

• Traits/Alleles coded twice

Traits

• Genetic code = WHAT

• Homozygous = WHAT

• Heterozygous = WHAT

• Manifestation of trait = WHAT

Traits

• Genetic code = Genotype

• Homozygous = Matching

• Heterozygous = Different

• Manifestation of trait = Phenotype

Sex-linked traits

• Y-chromosomes = WHAT passed to all WHAT

• X-chromosome = WHAT inheritance

Sex-linked traits

• Y-chromosomes = All FATHERS passed to all SONS

• X-chromosome = COMPLEX inheritance

what does intersex mean

Neither female nor male NOT hermaphrodite

Intersex - 13+ etiologies (causes or forms)

• WHAT

• WHAT

• WHAT

Intersex - 13+ etiologies (causes or forms)

• Non-binary (1 in 75)

• Ambiguous genitalia (1 in 2000)

• Physical, not psychological (1 in 15000)

What are two genetic intersex syndromes

• WHAT

• WHAT

What are two genetic intersex syndromes

• Turner’s syndrome

• Klinefelter’s syndrome

Turner’s syndrome

• WHAT chromosomes

• 1 in WHAT “female”

Turner’s syndrome

• Xo chromosomes

• 1 in 2500 “female”

Turner’s syndrome - Phenotypic expression

• WHAT

• WHAT

• WHAT

Turner’s syndrome - Phenotypic expression

• Short

• Wider neck

• Broad chest

Turner’s syndrome - secondary sex characteristics

• WHAT

• WHAT

• WHAT

Turner’s syndrome - secondary sex characteristics

• Menstruation

• Ovulation

• Breast development

Klinefelter’s syndrome

• WHAT chromosomes

• 1 in WHAT “male” births

Klinefelter’s syndrome

• XXY chromosomes

• 1 in 1000 “male” births

Klinefelter’s syndrome - Assigned male at birth

• Low WHAT count

• WHAT

• WHAT development

• body WHAT

• WHAT distribution

Klinefelter’s syndrome - Assigned male at birth

• Low SPERM count

• INFERTILITY

• BREAST development

• body HAIR

• FAT distribution

What are the two types of testosterone absorption

• WHAT

• WHAT

What are the two types of testosterone absorption

• Congenital Adrenal Hyperplasia (XX)

• Androgen Insensitivity Syndrome (XY)

Congenital Adrenal Hyperplasia (XX)

• Affects 1 in WHAT

Congenital Adrenal Hyperplasia (XX)

• Affects 1 in 10000

Androgen Insensitivity Syndrome (XY)

• Affects 1 in WHAT

Androgen Insensitivity Syndrome (XY)

• Affects 1 in 20000

Atypical development

• Number of WHAT

• Inherited WHAT

• Mutated WHAT

Atypical development

• Number of CHROMOSOMES

• Inherited ALLELES

• Mutated ALLELES