Genetics 2: Question Preview (ID: 24169)


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Suppose Green flowers (G) are dominant to white flowers and tallness (T) is dominant to shortness. What would be the phenotype of a flower with the genotype Ggtt
a) Green and tall b) Green and short c) white and short d) white and tall
Perform a cross of RrYy with RrYy. How many offspring will be round if round is dominant and represented by R?
a) 12/16 b) 10/16 c) 16/16 d) 8/16
A true-breeding tall plant is crossed with a true-breeding short plant. What would we call the F1 generation?
a) True-breeding b) Homozygous Dominant c) Purebreds d) Hybrids
Organisms with two different alleles for a trait are said to be
a) Purebreds b) True-Breeding c) Heterozygous d) Homozygous
Perform a cross of RRYy with RrYy. How many of the offspring will have the genotype RRYY?
a) 1 b) 2 c) 4 d) 6
Perform a cross of RRYy with RrYy. How many offspring will have the genotype RrYY?
a) 8 b) 4 c) 1 d) 2
Which is true about a cross between a heterozygous tall plant and a short plant?
a) 50% of the plants will be tall b) 50% of the plants will be medium height c) 25% of the plants will be tall d) 100% of the plants will be tall
If black fur is dominant to white, what genotype(s) would give black fur?
a) BB b) bbbb c) bb d) BB, Bb
Which is true about a cross between a heterozygous tall plant and a short plant?
a) about half will be tall, half will be short b) all will be tall c) all will be short d) half will be medium height
Perform a cross between two homozygous recessive short plants. How many of the plants are expected to be tall?
a) All of them b) None of them c) Half of them d) A quarter of them
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