<h2>Linkage groups </h2>
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
Answer:
-Destruction of red blood cells:
C) Malaria
-Shaking hands or feet:
D) Parkinson disease
-Streaks of pus in the throat area:
E) Strep throat
-Inability of immune system to fight off pathogens:
A) AIDS
Primary succession occurs at places where there was no vegetation or life before, usually places such as lava or places where glaciers were. Secondary occurs at places that have already previously been colonized, but the habitat was somehow disturbed or damaged.
