Answer:
500
Explanation:
According to the given information, the total number of albino people in the population= 1000/4 = 250.
Since albinism is an autosomal recessive trait, the genotype of albino people would be homozygous recessive. Therefore, the frequency of homozygous recessive genotype in the population (q2) = 250/1000= 0.25.
The frequency of recessive allele (q) = square root of 0.25 = 0.5
Since p+q=1. So, p (frequency of dominant allele) = 1-q = 1-0.5 = 0.5
Frequency of heterozygotes in the population= 2pq = 2 x 0.5 x 0.5 = 0.5 or 50%
Therefore, expected number of heterozygotes in the given population= 50% of 1000 = 500
Answer:
shortest wavelength of visible light: Violet
Energy that can be felt as heat but can't be seen: Infrared radiation
Short invisible rays that can cause damage to the eyes: Ultraviolet light
visible light with the longest wavelength: red 700
Explanation:
Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength, at around 700 nanometers.
<span>The answer is C because fungi use decomposition to get nutrition, while plants produce their own nutrients, making them autotrophs. Answer choice A is incorrect because fungi cells do have cell walls, even though they contain chitin, which isn't present in the cell walls of plants. Answer choice B is incorrect because while they do form colonies, most fungi are multicellular. Answer choice D is incorrect because plants are also able to reproduce both sexually and asexually.</span>
Crossing over happens in Meiosis 1 only. In Prophase 1 a cells chromatin (chromatin = chromosomes that have not condensed yet) condense and pair up forming homologous chromosomes (paired = XX (2 chromosomes together)). When this happens segments/ alleles of the chromosomes pairing up swap over. This creates genetic diversity as each chromosome is different, it has parts from its pair. This leaves every chromosome unique and individual.
I hope this helps, sorry some of the vocab is rather technical. By the way I would suggest watching the
'Crash Course: Meiosis' on YouTube, this really helped me when I was learning this topic. :D
