biology unit 4 lesson 1 – Flashcards
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If a pea plant's alleles for height are tt, what is true of its parents?
a) Both parents were tall
b) Both parents were short
c) Both parents contributed a recessive allele
d) Both parents contributed a dominate allele
answer
c) Both parents contributed a recessive allele
question
A tall plant (TT) is crossed with a short plant (tt). If the tall F1 pea plants are allowed to self-pollinate,
A) The offspring will be of medium height
B) All of the offspring will be tall
C) All of the offspring will be short
D) The offspring can be tall or short
answer
D) The offspring can be tall or short
question
When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited
A) One allele from each parent
B) To alleles from each parent
C) Three alleles from each parent
D) Four alleles from each parent
answer
A) One allele from each parent
question
If one individual is Tt and another individual is tt, which of the following is true?
A) The two have different genotypes and the same phenotypes
B) The two have the same genotype and the same phenotypes
C) The two have different genotypes and different phenotypes
D) The two have the same genotype and different phenotypes
answer
C) The two have different genotypes and different phenotypes
question
Segregation of alleles means that
A) Two alleles representing the same gene remain paired when gametes are formed during meiosis.
B) Two alleles representing the same gene separate when gametes are formed during meiosis.
C) Two alleles representing the same gene remain paired when body cells are formed during mitosis
D) Two alleles representing the same gene separate when body cells are formed during mitosis.
answer
B) Two alleles representing the same gene separate when gametes are formed during meiosis.