You are studying a species of fly in which females and males each have five pairs of chromosomes. Recombination occurs in males but not in females. How many different egg genotypes (that is, how many genetic combinations) can a single female produce? (1point) How many different sperm genotypes can a single male produce?

-- difference in sexes produced (2:1 ratio female:male) and presence in only females--> sex-linked mutation

-- occurrence of ratio in thirds instead of fourth--> lethal allele

THUS, this is a lethal allele that is lethal in homozygous (female) or hemizygous (male). All of the female must be heterozygous

Explanation:

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.