Biology, 04.07.2019 06:00 watsonjessalynn
In this field of sunflowers, variation exists. some flowers are tall, others short, and finally some plants are an intermediate height. the tallest plants shade the shorter; the taller plants are pollinated first. over time, we might expect this field of sunflowers to be mostly tall. according to this scenario, identify the type of reproduction and list the processes that aid in variation. a) sexual: mitosis and random assortment of chromosomes; fertilization b) asexual reproduction: meiosis and crossing over; pollination and fertilization c) sexual: meiosis, crossing over, and random assortment of chromosomes; pollination eliminate d) asexual: mitosis; reduction division of chromosomes with random assortment; pollination
Answers: 2
Biology, 22.06.2019 09:30, zahwaahmaf
Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
Answers: 1
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