<span>Since the pea plans are heterozygous they contain one dominant and one recessive allele. When you extrapolate this out we find that 25% of the plants will be homozygous dominant, 50% will be heterozygous, and 25% will be homozygous recessive. So 75% of the plans will have round peas.</span>
Focus definition, a central point, as of attraction, attention, or activity: The need to ... The need to prevent a nuclear war became the focus of all diplomatic efforts. ... What do a.m. and p.m. stand for? .... the point beneath the earth's surface at which an earthquake or underground
The correct answer is: When a sperm cell penetrates the oocyte membrane
The oocyte (is arrested at an early stage of the first meiotic division as a primary oocyte. During each menstrual cycle, one the day before ovulation gonadotropin hormone (luteinizing hormone) stimulates completion of meiosis 1. After the meiosis 1, 2 haploid daughter cells are formed: one becomes the secondary oocyte the other forms the first polar body. Newly formed secondary oocyte starts meiosis 2 which arrests at metaphase which will continue after the fertilization.
Answer: Gregor Mendel
Explanation: He's the scientist that first studied them and made great progress in genetics.