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10 questions · timed · auto-graded

Question 11 Mark
In a monohybrid cross, one trait is followed through the breeding process. For example, if we cross a pea plant with dominant purple flowers ________ (i) ________ with one having recessive white flowers ________ (ii) ________ , the first generation $\left( F _1\right)$ will exhibit the ________ (iii) ________ trait. However, when these F1 plants are self-pollinated, the next generation ( $F _2$ ) displays a ________ (iv) ________ ratio of purple to white flowers, demonstrating the principle of ________ (v) ________ .
Answer
Homozygous dominant,Homozygous recessive,Dominant,$3: 1$,Segregation
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Question 21 Mark
In humans, sex is completely determined by the ________ (i)_______ not depend on the ________ (ii) ________ . Typically, a female has two ________ (iii) ________ chromosomes, while a male has one ________ (iv) ________ and one ________ (v) ________ chromosome.
Answer
chromosomes,environment,$X$,$X$,$Y$
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Question 101 Mark
The chromosomal theory of inheritance was proposed by ________ and ________ in 1902.
Answer
Sutton, Boveri
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Fill in the blanks. - Biology STD 10 Questions - Vidyadip