can somebody pleasse help with the genetic variation unit test
Which statement best describes the process of crossing over?(1 point)
A. Homologous chromatids pair up, and non-sister chromosomes exchange genetic material.
B. Pairs of homologous chromatids are divided in half and distributed randomly into new diploid cells.
C. Pairs of homologous chromosomes are divided in half and distributed randomly into new haploid cells.
D. Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.
there are 25 questions but i only put 1 plss help
1.Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.
2.Each child has a 50% chance of inheriting the trait.
3.sperm cell
4.polygenic inheritance
5.ATG AAG TTG GCT AA
6.Genotypes determine the phenotypes expressed.
7.No, the mutations cannot be passed to offspring and only affect the individual.
8.0.75
9.0.5
10.35%
11.environmental factors
12. Sorry
13. Sorry
14. Sorry
15. Sorry
16. Sorry
Thank you Sure! All are correct! 100% Don't worry we will figure questions 12-16 out. This has been really helpful! Thank you so much to the both of you!
Thx Sure all the answers were 100% correct
I had these questions too...
In a moth population, 48 are brown, 30 are yellow, and 67 are black. What is the approximate probability of a moth being brown and yellow, respectively? (Round your answers)
- 33%; 21%
Scientists have been tracking the distribution of genetic variations within an elephant population over a period of 15 years. These variations alone can be used as evidence of
- different reproductive success.
These answers are correct :) ur welcome
The new test
1.Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.
2. Both children would have the allele, but 50% would inherit/show the trait.
3. Both sperm and egg cells
4. substitution
5. Genotypes determine the phenotypes expressed
6. No, the mutations cannot be passed to offspring and only affect the individual.
7. All of the above.
8. During DNA replication
9. True
10 Anaphase I
.11. Genetically different from each other
12. homologous chromosomes
13. a haploid cell
14. Sexual rep: Meiosis Asexual rep: Mitosis
Creates haploids: Meiosis 4 Daughter cells: Meiosis
2 Daughter cells: Mitosis
15. 8%
16. 0.60
100% Valid
this test has a modification and it says to omit the short answer questions so thanks for the normal answers.
Thanks y’all
sorry I forgot the first question
1. • independent assortment = the sorting of one pair of homologous chromosomes does not affect the sorting of another
• gametes = reproductive cells; eggs and sperm
• gene flow = when genes move from one population to another
• inheritable genetic variation = changes in genetic material that can be passed to offspring
• polygenic inheritance = a trait that is controlled by more than one gene
yeah they changed it or somthin
To answer this question, we need to understand the process of crossing over during genetic variation. Crossing over occurs during meiosis, specifically during prophase I. It involves the exchange of genetic material between homologous chromosomes.
Now, let's analyze the options:
A. Homologous chromatids pair up, and non-sister chromosomes exchange genetic material.
B. Pairs of homologous chromatids are divided in half and distributed randomly into new diploid cells.
C. Pairs of homologous chromosomes are divided in half and distributed randomly into new haploid cells.
D. Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.
Based on the description above, we can eliminate option B because crossing over does not involve the division of chromatids in half.
Option C is incorrect because crossing over occurs during the formation of haploid cells in meiosis, not before.
Option D is incorrect because it describes homologous chromosomes pairing up, but it does not explain the exchange of genetic material.
The correct answer is A. During crossing over, homologous chromatids pair up, and non-sister chromosomes exchange genetic material. This genetic exchange results in a recombination of genetic information between the homologous chromosomes, increasing genetic variation.
It's important to note that when taking a test, it's best to consult your textbook or class notes to confirm the answer. Understanding the underlying concepts is essential for success in any test.