OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In plants, being short is the recessive gene.Two heterozygous plants are crossed. What is the phenotypic ratio of the offspring?You must show your work for full credit!
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1 TT:2 Tt:1 tt3 tall; 1 short
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1 Tall:2 Medium:3 Short100% tall
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3 TT:1 tt2 tall; 2 short
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3 Tall:1 Short100% short
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Explanation:
Detailed explanation-1: -Use a Punnett square to predict the offspring in a cross between a dwarf pea plant (homozygous recessive) and a tall pea plant (heterozygous). What is the phenotypic ratio of the offspring? The phenotypic ratio will be 1 tall:1 dwarf.
Detailed explanation-2: -A heterozygous tall plant is crossed with a short plant, and 100 offspring are produced. How many of the offspring are likely to be tall? Solution : A cross between heterozygous tall (Tt) and homozygous short (tt) will produce 50% tall (Tt) and 50 % short (tt).
There is 1 question to complete.