Resumen
Summary Inheritance A level Biology
- Grado
- Institución
Year 1 Biology AQA A level notes. Achieved an A* in my final exam using these notes. They are based on the mark scheme requirements.
[Mostrar más]Vista previa 1 fuera de 1 páginas
Vista previa 1 fuera de 1 páginas
Añadir al carrito
Añadir al carrito
Vendedor
Seguir
arabellasherratt
Vista previa del contenido
Inheritance part 2 summary notes21 February 2023 16:55
- Final pair of chromosomes are sex chromosomes
- Females have 2 X chromosomes
- Males have one X and one Y chromosome
Sex inheritance in humans
- All gametes in females are the same as they contain a single X chromosome
- Males produce 2 different types of gamete- half have X chromosome, other half have Y
chromosome
Sex linkage
- Any gene carried on X or Y chromosome is said to be sex linked
- X chromosome longer than Y chromosome- for most of the length of the X chromosom
there is no equivalent homologous portion of the Y chromosome
- Characteristics controlled by recessive alleles that are on the non homologous portion
the X chromosome appear more frequently in males as there is no homologous portio
on the Y chromosome that might have the dominant allele
Example: haemophilia - blood clots slowly- slow and persistent bleeding
- Mostly in males
- Usually a recessive allele with an altered sequence of DNA bases- codes for a faulty
protein that does not function
- Cannot produce functional protein that is required in clotting process
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller arabellasherratt. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 3,70 €. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now