Unit 5 — Genetics and Biotechnology / Genetyka i biotechnologia

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English	Polski
This unit follows a trait on its journey from parent to child. It starts with meiosis, the special division that shuffles chromosomes and deals them into gametes; then it uses Mendel's rules — and their extensions like codominance, multiple alleles, and sex linkage — to predict what the offspring of a cross will look like. Next come human genetic conditions, from cystic fibrosis to Down syndrome, and the tools that reveal them: the pedigree and the karyotype. The unit ends with the biotechnology toolbox — cutting, pasting, delivering, reading, and now editing DNA — and the ethical questions that come with it.	Ten dział śledzi drogę cechy od rodzica do dziecka. Zaczyna się od mejozy — szczególnego podziału, który tasuje chromosomy i rozdaje je do gamet; potem korzysta z reguł Mendla — i ich rozszerzeń, takich jak kodominacja, allele wielokrotne czy sprzężenie z płcią — aby przewidzieć, jak będzie wyglądać potomstwo z danej krzyżówki. Dalej przychodzą choroby genetyczne człowieka, od mukowiscydozy po zespół Downa, oraz narzędzia, które je ujawniają: rodowód i kariotyp. Dział kończy się „skrzynką z narzędziami” biotechnologii — cięciem, wklejaniem, dostarczaniem, odczytywaniem, a dziś także redagowaniem DNA — i pytaniami etycznymi, które z tego wynikają.
The storyline: meiosis halves and shuffles the chromosome deck → fertilization joins two half-decks into a unique zygote → Mendel's ratios predict the hand each child is dealt → real life adds the exceptions (blood groups, pink flowers, color-blind boys, many-gene traits) → and biotechnology turns the whole story into tools: insulin-making bacteria, DNA fingerprints, CRISPR — plus the question "just because we can, should we?"	Oś działu: mejoza zmniejsza o połowę i tasuje talię chromosomów → zapłodnienie łączy dwie połówki talii w niepowtarzalną zygotę → stosunki liczbowe Mendla przewidują, jakie „karty” dostanie dziecko → życie dopisuje wyjątki (grupy krwi, różowe kwiaty, daltonizm u chłopców, cechy wielogenowe) → a biotechnologia zamienia całą tę wiedzę w narzędzia: bakterie produkujące insulinę, profile DNA, CRISPR — oraz pytanie „skoro możemy, to czy powinniśmy?”

The terms / Hasła

Term	Po polsku	In one line
Allele	allel	One version of a gene — the B or the b.
Autosomal Chromosomes	autosomy	The 22 chromosome pairs that do not decide sex.
Bacterial Transformation	transformacja bakteryjna	Getting bacteria to take up foreign DNA — the "deliver" step of biotech.
Bioethics	bioetyka	The "should we?" questions genetics forces us to ask.
Biotechnology	biotechnologia	Using organisms and their molecules to make useful products.
Cloning	klonowanie	Making a genetic copy — of a gene, a cell, or a whole organism.
Codominance	kodominacja	Both alleles show up fully, side by side — like blood type AB.
Color Blindness	daltonizm	X-linked recessive trouble telling red from green — mostly in males.
CRISPR	CRISPR	The programmable "molecular scissors" that edit DNA at a chosen spot.
Crossing Over	crossing-over	Homologous chromosomes swap segments in prophase I of meiosis.
Cystic Fibrosis	mukowiscydoza	Recessive CFTR-channel defect → thick, sticky mucus in lungs and gut.
Diabetes	cukrzyca	Failed insulin signaling — two very different types, neither simply Mendelian.
DNA Fingerprint	profil genetyczny	A person's unique DNA band pattern — the "read" step used in courtrooms.
Dominant Allele	allel dominujący	The version that shows its trait even in a single copy.
Down Syndrome (Trisomy 21)	zespół Downa	An extra chromosome 21, produced by nondisjunction in meiosis.
Fertilization	zapłodnienie	Sperm and egg fuse; two half-sets of chromosomes make a full set.
Gametes (Sex Cells)	gamety	The haploid sex cells — sperm and egg — made by meiosis.
Gel Electrophoresis	elektroforeza żelowa	Sorting DNA fragments by size as they race through a gel.
Gene Therapy	terapia genowa	Treating disease by giving cells a working copy of a gene — or editing the broken one.
Genetic Recombination	rekombinacja genetyczna	New combinations of existing alleles — the shuffle behind sibling differences.
Genetically Modified Organism (GMO)	organizm modyfikowany genetycznie	An organism whose genome was deliberately altered in the lab.
Genetics	genetyka	The science of heredity — how traits pass and vary.
Genome	genom	The complete set of an organism's DNA, every gene included.
Genotype	genotyp	The pair of alleles you actually carry: BB, Bb, or bb.
Hemophilia	hemofilia	X-linked recessive failure of blood clotting — the "royal disease".
Heterozygous	heterozygota	Two different alleles of a gene (Bb) — a carrier, if the trait is recessive.
Homologous Chromosomes	chromosomy homologiczne	A matched mom-and-dad pair: same genes, possibly different alleles.
Homozygous	homozygota	Two identical alleles of a gene: BB or bb.
Huntington's Disease	choroba Huntingtona	A dominant, late-onset brain disorder from a stretched CAG repeat.
Incomplete Dominance	dominacja niepełna	The in-between blend: red × white snapdragons give pink.
Independent Assortment	niezależna segregacja	Each chromosome pair lines up — and separates — at random in meiosis I.
Inheritance	dziedziczenie	How traits travel from parents to offspring in particles called genes.
Karyotype	kariotyp	A sorted portrait of all 46 chromosomes — extra or missing ones show up.
Meiosis	mejoza	Two divisions that turn one diploid cell into four different haploid cells.
Monohybrid Cross	krzyżówka jednogenowa	A one-gene cross: Bb × Bb gives 1 BB : 2 Bb : 1 bb, phenotypes 3:1.
Multiple Alleles	allele wielokrotne	More than two versions of a gene in the population — like ABO's three.
Nondisjunction	nondysjunkcja	Chromosomes fail to separate in meiosis, so gametes get wrong counts.
Pedigree	rodowód genetyczny	A family tree with symbols that lets you track a trait through generations.
Phenotype	fenotyp	The observable trait — what the genotype (plus environment) actually produces.
Polygenic Inheritance	dziedziczenie wielogenowe	Many genes adding up to one trait — height, skin color, disease risk.
Recessive Allele	allel recesywny	The version that stays hidden unless you carry two copies.
Recombinant DNA	rekombinowany DNA	DNA pasted together from two different sources — the "paste" step of biotech.
Restriction Enzyme	enzym restrykcyjny	Bacterial scissors that cut DNA at one exact sequence — the "cut" step.
Sex Chromosomes	chromosomy płci	X and Y, the 23rd pair: XX develops female, XY male.
Sex-Linked Traits	cechy sprzężone z płcią	Traits carried on the X chromosome — which is why sons pay for them more often.
Sexual Reproduction	rozmnażanie płciowe	Two parents, meiosis plus fertilization, genetically unique offspring.
Sickle Cell Anemia	anemia sierpowata	One amino-acid swap in hemoglobin bends red blood cells into sickles.
Transgenic Organism	organizm transgeniczny	Carries a working gene taken from a different species.
Vaccine	szczepionka	A harmless preview of a pathogen that trains the immune system's memory.
Zygote	zygota	The single fertilized cell every one of your cells descends from.

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AP Biology connection

This unit maps onto AP Biology Unit 5 (Heredity) — meiosis and its two built-in shuffles (crossing over, independent assortment), Mendelian ratios and probability rules, the non-Mendelian extensions (codominance, multiple alleles, sex linkage, polygenic traits), and chromosomal inheritance including nondisjunction disorders — while the biotech toolbox (restriction enzymes, recombinant DNA, bacterial transformation, gel electrophoresis) is Topic 6.8 of AP Unit 6 (Gene Expression and Regulation), where CRISPR and gene therapy also sit as applications of gene expression; sickle cell's heterozygote advantage additionally reaches into Unit 7 (Natural Selection). The deep-dive section at the bottom of each term page goes there.