Mendel (1 Viewer)

[mikz27]

Hi, i'm having difficulty writing notes for this dot point:

*Describe outcomes of monohybrid crosses involving simple dominance, using Mendel's explanations

I was wondering what I should write for this dot point and where should I inccorporate the law of segregation and independent assortment.
Thankyou, any help is appreciated

 

[xiao1985]

2nd generation has pheno type 1:3, given mendel's "factor" theorem

 

[Budz]

Yer its basically that simple dominace is mendels 2nd pea plant cross.

regarding law of segragration and independant assortment
segragation meaning that cromosomes segregate when forming gametes, where gametes are haploidial in chromosomes(meanin have half the original number)
this can be included when you say that fertilization results in two haploid cells comin togeather forming a cell of complete genetic makeup and hence simple dominace occurs where one gene on one chromosome would appear as a physical characteristic over a recessive gene..
independant assortmant is the same... chromosomes are independant of eachother
like pea sive does not affect pea colour...
this was later disproved and changed by morgan

 

[*mel*]

This is what we wrote for that dot point.

*Describe outcomes of monohybrid crosses involving simple dominance using Mendel's explanations.

Regular patterns observed in monohybrid crosses:
- All the F1 offspring display the dominant characteristic seen in one fo the true-breeding parents.
- The F2 offspring are of two kinds, corresponding to each of the characteristics shown in the two parents.
- The two kinds of F2 offspring occur in the average ratio of 3 dominant to 1 recessive.

Mendel's Terms = Modern Terms (supposed to be in a table)

dominant/recessive = dominant/recessive
pair of character factors = alleles
true breeding = homozygous
hybrid = heterozygous


Hope this helps!