AP BIOLOGY

HEREDITY

MONOHYBRID CROSS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
For Mendel’s explanation of inheritance to be correct,
A
the genes for the traits he studied had to be located on the same chromosome
B
which gametes combine at fertilization had to be due to chance
C
genes could not be transmitted independently of each other
D
only diploid organisms would demonstrate inheritance patterns
Explanation: 

Detailed explanation-1: -Answer and Explanation: For Mendel’s explanation of inheritance to be correct, b. Whichever gametes combine at fertilization had to be due to chance.-this is because if only gametes with certain traits would fertilize, then the patterns of inheritance would have a varying probability.

Detailed explanation-2: -which gametes combine at fertilization had to be due to chance. homozygous.

Detailed explanation-3: -Understanding Recessive Traits To understand whether traits were hidden in the F1 generation, Mendel returned to the method of self-fertilization. Here, he created an F2 generation by letting an F1 pea plant self-fertilize (F1 x F1). This way, he knew he was crossing two plants of the exact same genotype.

Detailed explanation-4: -Law of Segregation (biology definition): one of the Mendelian Laws of Inheritance stating that the two members of a pair of alleles separate during gamete formation. Consequently, each gamete contains only one member of every pair of genes.

Detailed explanation-5: -1: The Law of Segregation states that alleles segregate randomly into gametes: When gametes are formed, each allele of one parent segregates randomly into the gametes, such that half of the parent’s gametes carry each allele.

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