Genetics

Genetically speaking, what do we know about birth defects caused by thalidomide, cocaine and alcohol?

Genetics

What do we know about genetic effects of toxic chemicals such as Agent Orange and DDT?

% of traits passed to progeny

The average pea pod contains about 7 peas. The gene for smooth peas is dominant over the gene for wrinkled peas. If heterozygous pea pods grown from smooth peas are self-fertilized and all of the pods have 7 peas, what percentage of the pods will have: a) all smooth peas? b) 5 smooth and 2 wrinkled peas?

Probability

In humans, the ability to taste PTC is inherited as a dominant gene (T; Taster). in a marriage between two heterozygous tasters (Tt): a) what is the probability of 3 taster children? b)what is the probability of 3 taster girls? c)if they have 5 children, what is the probability that the first 3 will be tasters and the last 2 nontasters? d)how many different ways could they have 3 taster and 2 nontaster children in any order? e)what is the probabilty that they will have 3 taster and 2 nontaster children in any order?

Corn genotypes

a) While examining an ear of corn, you notice that the kernels in the ear display two apparent phenotypes; yellow and white. inspired by your understanding that these represent different alleles of a single gene, you count the kernels of each type and you asses 347 yellow (Y) kernels and 111 white (y) kernels. if this ear of corn is an F2 hybrid, what was the genotype of its F1 parent? which allele is dominant? b) For the ear of corn detailed above, test to see if the observed phenotype distribution fits the predictions of the genotype using the X2 test. what is your hypothesis? do the data permit you to accept the hypothesis? show work.