Following statements regarding to the embryogenesis in A. thaliana.

A. The first zygotic division is unequal, with the basal cell larger than the apical cell. The basal cell divides to give rise to the suspensor. The apical cell divides vertically to form a two-celled proembryo, which will give rise to the rest of the embryo.

B. The top most suspensor cell is recruited into the embryo, where it is known as the hypophysis, and contributes to the embryonic root meristem and root cap.

C. The next two divisions produce an eight-cell octant-stage embryo, which develops into a heart-stage embryo of around 32 cells

D. The embryo elongates and the cotyledons start to develop as wing-like structures at one end, while an embryonic root forms at the other. This stage is known as the globular stage.

Which of the following statements are correct?

#Question id: 5461

#Unit 8. Inheritance Biology

When two or more nonallelic gene pairs affect the same character in the same way, it is called _______.

#Question id: 5462

#Unit 8. Inheritance Biology

What was the ratio of F2 generation when red and white kernelled variety of wheat were crossed when 2 QTL control character?

#Question id: 5463

#Unit 8. Inheritance Biology

Plants with genotype aabb have seeds that average 1 g in weight, whereas plants with genotype AABB have seeds that average 3.4 g in weight. Plant with genotype aabb is crossed with plant of genotype AABB. If the F1 plants are intercrossed to produced 2/8 proportional of F2 plant having expected seed weight

A  . 1.6        B- 2.8        C-  2.2       D. 1             E . 3.4  

#Question id: 5464

#Unit 8. Inheritance Biology

Two varieties of maize averaging AABBCC (200 inch) and aabbcc (80 inch) in height, respectively, are crossed. The F1 progeny is quite uniform averaging 140 inches in height allowed to self fertilization. If height is control by 3 pair of polygene, what is the height of following genotype of F2 plant?

I- AaBBCC     II- aaBbCC       III- aabbCc

#Question id: 5465

#Unit 8. Inheritance Biology

A pure line apple plant yielding 3.5 pound apple was crossed with a .5 pound apple yielding plant, all F1 progenies yielded apples of 2 pound, F1 plant allowed to self fertilization then what will be proportional of 3 pound, 2 pound and .5 pound respectively among offspring if character is governed by 3 pair of polygene

#Question id: 5466

#Unit 8. Inheritance Biology

Researcher studies of discontinuous and continuous character, the following conclusion were made

a. Discontinuous characteristics exhibit few distinct phenotypes

b- Continuous characteristics exhibit a wide range of phenotypes

c .Continuous characteristics are frequently produced by effects of many genes

d. Continuous characteristics are frequently produced by effects of environment

Which of above conclusion is correct?