10 When a purebred pea plant with smooth green pods is crossed with a purebred p

Question

10 When a purebred pea plant with smooth green pods is crossed with a purebred plant that F2 th bas constricted yellow pods, the phenotypic ratio of the 7 933.1 10 422 A 311 1 To determine the probability that an event will occur, divide the number of imes the event occurs by theA number of trials number of probable events C expected ratio D previous ratio 12 It afamily has four sons, the probability that the next child will be a boy is , C. 1/5 D 4/5 13 Mendel explained that aleies distribute randomly when gametes ane made. This explains his principle ofD C dominance B. segregation 14 Meiosis has phases? c 3 D 2 Meiosis doesn't have phases homozygous dominant are crossed, the offspring will probably show 15 If an organism has two different alleles for a trait it is 7 A homozygous heterozygous recessive 16. When two hybrid a genotypic ratio of A 1:1 B 1:21 C. 13.1 3.1 17 The term 'sex cell" also refers to an) C A allele B hybrid gene occurs when crossing-over and independent assortment produce new combinations of genes C Test cross Heredity

Explanation / Answer

10) The correct option is c. 9:3:3:1.

RR - smooth and YY - green

rr - constricted and yy - yellow.

Parent generation RRYY X rryy

Gametes formed RY ry

F1 Generation RrYy( smoth and green pods) x RrYy sef crossed

Gametes formed RY, Ry, rY and ry    RY, Ry, rY and ry

F2 Generation

The phenotypic ratio - 9:3:3:1.

Smooth and green pods - 9.

Smooth and yellow pods- 3.

Constricted and green pods - 3.

Constricted and yellow pods - 1.

11) The correct option is A. Number of traits.

Traits are a distinguishing quality or characteristic, which one belongs to an organism. It involves genes and characteristics of organisms.

12) The correct option is A. 1/2.

The probability doesn't change as the two outcomes are independent of each other.

13) The correct option is A. Independent assortment.

The Principle of Independent Assortment explains how different genes independently separate from one another when reproductive cells develop.A gamete randomly gets either the copy from female or the copy from male independently for each chromosome.

Male /Female RY Ry rY ry RY RRYY( smoth and green pods) RRYy( smoth and green pods) RrYY( smoth and green pods) RrYy( smoth and green pods) Ry RRYy( smoth and green pods) RRyy( smoth and yellow pods) RrYy( smoth and green pods) Rryy( smoth and yellow pods) rY RrYY( smoth and green pods) RrYy( smoth and green pods) rrYY( constricted and green pods) rrYy constricted and green pods) ry RrYy( smoth and green pods) Rryy( smoth and yellow pods) rrYy constricted and green pods) rryy constricted and yellow pods)

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