Genetics Answers

Many scientists involved in the history of an important organic chemical which have a
complex molecular structure that can be found in all prokaryotic and eukaryotic cells and
important for identification and classification of an organism.

Explain the component of the organic chemical and how we account the differences
between species of an organism if it is made of the same component.

A cross was made between a white male dog and two different black females.The first black female gave birth to eight black pups,the second female gave birth to four white and three black pups.What are the likely genotypes of male parent and two female parent?

Huntington disease is a rare dominant trait that causes neurodenegeration later in life. A man in his thirties, who already has three children, discovers that his mother has Huntington disease though his father is unaffected. What are the following probabilties?

Dihybrid Crossing based on Mendel's Principle

In pea plants, yellow seeds(Y) are dominant over green seeds(y) and round peas(R) are dominant over wrinkled peas(r). Cross a plant that is heterozygous for both traits with a plant thas is homozygous recessive for both traits. Draw a punette square to show all possible offspring and determine the genotypic and phenotypic ratios

A woman is heterozygous for three linked autosomal genes and has the genotype GgHhMm. The three genes are arranged on the chromosomes in the order listed (i.e. G then H then M). Her husband is homozygous recessive for each of the genes. They have eight children with the following genotypes:
Three are GghhMm.
Two are ggHhmm.
One is GgHhmm.
One is Gghhmm.
One is gghhmm.
What is the most likely combination of alleles on each of the mother’s chromosomes? Explain.
List the genotypes of the recombinant children above. For each of these children, determine the location of the required crossover(s) in the mother’s oocyte to create their recombinant chromosome by identifying the two genes between which the crossover(s) occurred.
List the other possible recombinant genotypes that have not appeared in the offspring.

Name two traits that are inherited and controlled by genes

Give one gene of interest

What is the theory of relativity

In cats, black coat color is dominant over gray. A female black cat whose mother is gray mates with a gray male. If this female has a litter of kittens, what is the probability that the mating will produce gray kittens? Show your work in a Punnett square and give the probability.