Y-chromosomes
Paternal genetic inheritance
Y-chromosomes is the plural of Y-chromosome, one of the two sex chromosomes in mammals.
Humans typically have either two X chromosomes (female) or one X and one Y (male).
The Y-chromosome carries genes that trigger male development, most notably the SRY gene.
Y-chromosomes pass from father to son, making them useful for tracing paternal lineage.
Sperm-producing sex
- inheritanceProperty received from ancestors
- paternalOf or from father
- karyotypeOrganized chromosome display
- allelesVariant forms of genes
XY · recombination · meiosis · gametes · sperm · haploid · mutation · DNA
Traced through fathers
- haplogroupGenetic ancestry classification
- genealogyStudy of family descent
- lineageDescent from progenitors
- descentDownward slope or lineage
Adam · migration · population · markers · haplotype · tracing · heritage · forefathers
Male reproductive glands
- testosteroneChief male sex hormone
- spermatogenesisMale gamete formation
- fertilityCapacity for reproduction
- reproductiveRelated to producing offspring
development · embryonic · differentiation · gonads · masculinization · hormones · puberty · androgens
Establishing who someone is
- evidenceFacts supporting truth
- sampleSubset for study
- matchingIdentical in appearance
- laboratoryFacility for scientific investigation
analysis · database · exclusion · degraded · amplification · PCR · biological · specimen
Progressive loss of function
- shrinkingDecreasing in dimension
- palindromesSequences identical reversed
- mammalianOf the nursing class
- conservationPreventing waste or loss
dosage · ancient · primate · monotreme · marsupial · bottleneck · selection
male
Sperm-producing sex
- inheritanceProperty received from ancestors
- paternalOf or from father
- karyotypeOrganized chromosome display
XY · alleles · recombination · meiosis · gametes · sperm · haploid · mutation · DNA · genes
patrilineal
Traced through fathers
- haplogroupGenetic ancestry classification
- genealogyStudy of family descent
- lineageDescent from progenitors
descent · Adam · migration · population · markers · haplotype · tracing · heritage · forefathers · phylogenetic
testes
Male reproductive glands
- testosteroneChief male sex hormone
- spermatogenesisMale gamete formation
- fertilityCapacity for reproduction
reproductive · development · embryonic · differentiation · gonads · masculinization · hormones · puberty · androgens
identification
Establishing who someone is
laboratory · analysis · database · exclusion · degraded · amplification · PCR · biological · specimen · investigation
degeneration
Progressive loss of function
- shrinkingDecreasing in dimension
- palindromesSequences identical reversed
- mammalianOf the nursing class
conservation · dosage · ancient · primate · monotreme · marsupial · bottleneck · selection