Suppose you count 40 green tobacco seedlings and 2 white tobacco seedlings in one agar plate. Do your results show that both parent plants were heterozygous for the allele?

What will be an ideal response?


Answer: A. Yes

You need to have recessive traits to have 2 recessive seeds

Biology & Microbiology

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It is summer, and you are excited about going to your local amusement park, and specifically about riding the new roller coaster that was just built. You imagine waiting at the top of the stairs for the roller coaster to pull into the station, climbing into the car, strapping yourself into the seatbelt, and pulling down the harness. You can imagine the cars slowly chugging up to the top of the

first hill, coming down on the other side, and the excitement you expect to feel as you go along for the ride. Of all of the things that you have imagined, which is an example of potential energy? A. Waiting at the top of the stairs for the roller coaster to pull into the station B. Climbing into the car C. Pulling down the harness D. The roller coaster car going up the first hill

Biology & Microbiology

Which of the following creates double-stranded breaks to initiate recombination in eukaryotes?

A. Spo11 B. RuvAB C. Rad50 D. Sgs1 E. Dmc1

Biology & Microbiology

This animal has paired nerve cords that

connect to a simple brain. This animal is

a. a lobster. b. a jellyfish. c. an earthworm. d. a grasshopper. e. more than one of these

Biology & Microbiology

In a survivorship curve, a type III species, like most insects and plants, is a species that has

A. a strong possibility of becoming extinct in a relatively short period of time. B. an equal probability of dying at any age. C. an extremely long life span. D. the highest probability of dying at a very young age. E. the highest probability of dying as it reaches its maximum life span.

Biology & Microbiology