part one of final studyguide

sex determination in humans

men are XY and women are XX

Why do pea plants make suitable subjects for the study of genetic

they have short life cycles which means multiple generations can be observed, they have distinct traits that re easy to view and distinguish between, they grow very fast, and very easy to breed

Define Progeny.

a descendant of a animal person or plant essentially a offspring

What is the “Law of Dominance

The law of Dominace is in a pair of alles one will alwys mask the other which means the capital letter in the allees will be what the phentoype is even if the genotype is PP, or Pp

Phenotype

What appears on the outside and what people see when there is an offspring or something made. like when its Pp the genotype is P and P is purple.

Genotype

the cmbnation of alles or genes like pp or Pp and doesnt matter if its dominant or recessive

F-1

F1 generation is the offspring of the parents

F-2

would be the offsprin of the F1 offpsings breeding together

What is polygenic inheritance? Examples?

when a single trait is influenced by multiple genes leading to wide range of phenotypes. some examples are eyes, height, hair, skin, nose shape, length of femur, lip shape.

is Huntington’s disease caused by a dominant or recessive trait?

dominant

What are linked genes?

genes located on the same chromosome, the greater the frequency of recombination between them two genetic markers, the farther the two are assumed to be. they tend to be iherted together and are more likely to be passed down to the next generation.

inversions

chromosome piece reataches in the reverse direction, flipping over a section of the chromosme

Translocations

reciprocal translocation) the movement of a gene,or groups of genes to a different location

Point mutation

occur in the genome where a single base (nucleotide) pair is added, delete,d or changed.(types of point mutations insertion, deltion and substitution)