Laboratory work №4

Date: 2015-10-07; view: 456.

Andalusian chickens, having a blue color (mosaic distribution of black and white areas), obtained by crossing the white and black races. What are the gametes will be obtained by these chickens and which signs of splitting can be expected in the F2?

Crossing of night beauty (Mirabilis jalapa), which has red flowers, with white flowers form in F1 gives plants with pink flowers. What are the gametes will be obtained by plants and which splitting of the color of flowers will be in F2?

Alkaptonuria is an inherited metabolic disorder that depends on a recessive gene (s). What are gametes and some offspring can be expected in a healthy marriage (AA) of the parent with a sickalkaptonuria?

Hereditary deformity in humans brachydactyly (shortening of the fingers) is a dominant trait. What are gametes and offspring can be expected in a normal marriage with a parent having this defect?

7. In the crossing of wheat ear's length is inherited in an intermediate type, and awnless dominates spinalis. What are gametes and what posterity will be in F1 and F2 plants of wheat with a long awnless plait, crossed with spinalis wheat that has short ear?

Subject: Analysis of the first generation of monohybrid and dihybrid interbreeding on Drosophila, construction of experiments for producing of F2. Seminar of discussing the theory, dihybrid and polyhybrid interbreeding.
Objective: Studying of dihybrid and polyhybrid crossing on Drosophila.

Necessary equipment: Microscope, fly, flat tubes, beakers, klitren, 25 ml of nutritious substances, 100g of potatoes, 75 g of raisins, 2 g agar-agar, yeasts, thin tweezers, white paper, cotton.