autosomal linkage

Question 1

define autosome

Answer 1

any chromosome that isn’t a sex chromosome

Question 2

define autosomal linkage

Answer 2

two or more genes carried on same autosome (not sex chromosome) which are likely to be inherited together

Question 3

explain the relationship between autosomal linkage and crossing over

Answer 3

genes located on the same autosome are much more likely to be inherited together

the only reason they might not be inherited together is due to crossing over

Question 4

why aren’t mendelian patterns of inheritance followed

Answer 4

linked genes will be inherited together (ie: they can’t randomly pair with another allele) as crossing over is less likely to occur

offspring numbers will not match typical mendelian ratios (ie: 9:3:3:1)

Question 5

distinguish between autosomal and sex linkage

Answer 5

sex linkage only involves genes on X or Y chromosome and mainly affects males as they only have one copy

autosomal affects males and females equally