Hello Jiskha members. I am doing a science assignment currently and I need my answers checked as I am unsure of if I am correct.
Which statement is correct about a bottleneck event? (1 point)
A bottleneck event increases the gene pool of a population.
A bottleneck event increases the population of a species permanently.
A bottleneck event decreases the gene pool of a population. ****
A bottleneck event decreases the population of a species permanently.
Why are the gene pools of small populations reduced compared to those of larger populations? (1 point)
lack of advantageous traits
lack of suitable mates
inbreeding ****
bottleneck events
A bottleneck event reduces the population of bears in one area by 80%. Which statement is correct about the bears’ gene pool? (1 point)
It has temporarily increased, so disadvantageous traits are more likely to be passed on.
It has temporarily decreased, so disadvantageous traits are less likely to be passed on.
It has temporarily decreased, so disadvantageous traits are more likely to be passed on. ****
It has temporarily increased, so disadvantageous traits are less likely to be passed on.
Which information helps scientists determine the survival probability of a population? (1 point)
the existence of natural selection in the population
the number of offspring of an individual in the population
the feeding habits of an individual in the population
the level of genetic variation in the population ****
Please do not use letters in your answer. Sometimes the answers in the assignment are shuffled.
Example: Instead of doing C D A C, tell me the words.
Thank you so much!
A. A bottleneck event decreases the gene pool of a population.
B. inbreeding
C. It has temporarily decreased, so disadvantageous traits are more likely to be passed on.
D. the level of genetic variation in the population
omg thank you @Loveguru 100% right <33
@Loveguru is right!!
Well, well, well! Let's put on our science hats and check these answers, shall we?
1. A bottleneck event actually decreases the gene pool of a population, so your answer of "A bottleneck event decreases the gene pool of a population" is correct! Ding, ding, ding!
2. When it comes to small populations, the reduced gene pool is due to a little thing called "inbreeding". So, your answer of "inbreeding" is right on the money! I bet you're feeling pretty clever right now, huh?
3. Alright, time to tackle the bears! After experiencing a bottleneck event, the bears' gene pool temporarily decreases, meaning disadvantageous traits are more likely to be passed on. So, "It has temporarily decreased, so disadvantageous traits are more likely to be passed on" is the correct answer here. Bear-y funny, right?
4. To determine the survival probability of a population, scientists look at the level of genetic variation in the population. So, give yourself a pat on the back for saying "the level of genetic variation in the population". You truly have a good "grasp" on this!
I hope these answers bring a smile to your face, just like a clown at a science fair! Keep up the great work, and remember, science is all about having fun while learning.
For the first question, the correct statement about a bottleneck event is "A bottleneck event decreases the gene pool of a population." This is because a bottleneck event refers to a dramatic decrease in population size, which typically leads to a loss of genetic diversity and variation within a population.
For the second question, the correct answer is "inbreeding." The gene pools of small populations are reduced compared to those of larger populations primarily because there is a higher likelihood of inbreeding. Inbreeding occurs when individuals within a small population mate with close relatives, leading to a higher frequency of harmful genetic traits.
Regarding the third question, the correct statement about the bears' gene pool is "It has temporarily decreased, so disadvantageous traits are more likely to be passed on." Since a bottleneck event reduces the population of bears in one area by 80%, the overall gene pool becomes significantly smaller, leading to a decrease in genetic diversity and, consequently, an increase in the likelihood of disadvantageous traits being passed on.
Finally, the information that helps scientists determine the survival probability of a population is "the level of genetic variation in the population." Genetic variation is crucial for the long-term survival of a population, as it allows for adaptability to changing environmental conditions and reduces the risk of genetic diseases or inbreeding depression.
To summarize:
1. A bottleneck event decreases the gene pool of a population.
2. The gene pools of small populations are reduced due to inbreeding.
3. The bears' gene pool has temporarily decreased, so disadvantageous traits are more likely to be passed on.
4. The level of genetic variation in the population helps scientists determine the survival probability.