Bio1334 Genetics - Molecular Genetics - Patterns And Principles Of Heredity (Lecture Ten)
Diagram meiosis, including the behaviour of alleles at a locus during meiosis Demonstrate an understanding of how traits are transmitted from one generation to the next Do monohybrid crosses using the Law of Segregation and basic probabilities Do dihybrid crosses using the Law of Independent Assortment and basic probabilities (using both Punnett Square and ‘branching diagram’ techniques) Use the appropriate vocabulary utilised in genetic crosses
Questions and Answers
- 1.
Complete the following sentence:Each adult has two genes for each character; different forms of the genes are called _______.
Correct Answer
AllelesExplanation
Each adult has two genes for each character, and these genes can exist in different forms. These different forms of genes are called alleles. Alleles are responsible for the variations in traits and characteristics that individuals inherit from their parents. They can be dominant or recessive, and they determine the expression of specific traits in an individual.Rate this question:
- 2.
True or False?"Meiosis results in the formation of two types of gametes in equal numbers "
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Meiosis is a type of cell division that occurs in sexually reproducing organisms to produce gametes (sex cells). During meiosis, the parent cell divides twice, resulting in the formation of four daughter cells, each containing half the number of chromosomes as the parent cell. These daughter cells are genetically different from each other and from the parent cell. As a result, meiosis does indeed produce two types of gametes, specifically eggs (female gametes) and sperm (male gametes), in equal numbers. Therefore, the statement "Meiosis results in the formation of two types of gametes in equal numbers" is true.Rate this question:
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- 3.
If two heterozygote parents reproduce, what is the probability their offspring will be homozygous recessive?
- A.
25%
- B.
50%
- C.
75%
- D.
100%
Correct Answer
A. 25%Explanation
When two heterozygote parents reproduce, there is a 25% chance that their offspring will be homozygous recessive. This is because each parent has one dominant allele and one recessive allele, and there is a 25% chance that both parents will pass on their recessive alleles to their offspring.Rate this question:
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Mar 21, 2023Quiz Edited by
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Nov 11, 2015Quiz Created by
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