Genetics Answers

Describe Gonadal sex determination and accessory determination sex in humans

Differentiate plant reproduction from animal reproduction. Present your answer in a tabular form.

imagine you have just purchased a black rabbit of unknown genotype.you mate it to a white one and she delivery twins one black and one white ... illustrate this cross with suitable cross diagram

what is mendelian principle

describe how gene expression is regulated ?

Muning and Peping has a kitten but their kitten color is BLACK. If Muning is a heterozygous white (Bb) and Peping is a homozygous black(bb). Create a Punnett square using B for the dominant gene (white) and b for the recessive one (black).

5) Phenotype:

6) Genotype:

7) Phenotypic Ratio:

8) Genotypic Ratio:

1) Patrick and his partner Patricia recently had Lil Patty and Patricia is worried that the hospital made a mistake and mixed her baby with some other starfishes. Lif Patty has a SMALL HEAD! Patrick is heterozygous for his tall head and Patricia is heterozygous for her tall head. Create a Punnett square using H for the dominant gene and h for the recessive one.

1) Phenotype:

2) Genotype:

3) Phenotypic Ratio:

4) Genotypic Ratio:

The common housefly has a haploid number of 6 consisting of 3 long chromosomes (one metacentric, one acrocentric, and one telocentric); 3 short chromosomes (one metacentric, one acrocentric, and one telocentric). Draw and label a typical housefly primary spermatocyte in Metaphase I and spermatozoa at Telophase II.   

If the quantity of DNA in a cell at G1 of the cell cycle is 5 picograms. What will the quantity of DNA in that cell be at G2 phase of the cell cycle? Give a reason

The common housefly has a haploid number of 6 consisting of 3 long chromosomes (one

metacentric, one acrocentric, and one telocentric); 3 short chromosomes (one metacentric,

one acrocentric, and one telocentric). Draw and label a typical housefly primary spermatocyte

in Metaphase I and spermatozoa at Telophase II.