Question

Choose true or false for each statement listed below 1. The total number of autosomal linkage groups in a cell equals the number of different pairs of homologous autosomes in a cell. 2. The closer two genes are on a chromosome the less likely recombination will occur between them. 3. Two genes that are on the same chromosome can never appear unlinked. 4. Recombinant offspring inherit the same allele combinations as their parents had. 5. Crossing over occurs during meiosis I. 6.When using chi square analysis and possibly linked genes, your null hypothesis must be that the genes are not linked.

Answer 1

Linkage groups

Explanation:

1. The number of autosomal linkage groups in a cell is equal to the homologous autosomes in a cell-this statement is true;Number of autosomal linkage group will determine the homologous autosomes

2. The closer two genes are on a chromosome the less likely is the chance that recombination will occur between them-this statement is true;Linkage is directly proportional to distance between two genes

3. Two genes that are on the same chromosome can never appear unlinked-this statement is false;When genes are found on different chromosomes or far apart on the same chromosome, they assort independently and are said to be unlinked.

4. Recombinant offspring inherit the same allele combinations as their parents had-this statement is false;Offspring allele combination might differ because half chromosomes are received from mother and other half from father

5. Crossing over occurs during meiosis I-this statement is true;Crossing over occurs during the Pachytene stage of Prophase I of meiosis I

6.When using chi square analysis and possibly linked genes, your null hypothesis must be that the genes are not linked-this statement is true;Chi-squared tests are a statistical measure that are used to determine whether the difference between an observed and expected frequency distribution is statistically significant