Biology questions Please answer all of them Multiple choice

Biology questions: Please answer all of them

Multiple choice:

1. The concept that a random distribution of alleles occur during gamete formation is the A. law of segregation B. concept of dominance C. law of independent assortment D. concept of probability

2. At the end of mitosis, how many haploid cells are there? A. 0 B. 2 C. 4 D. 8

3. At the end of meiosis II, how many haploid cells are there? A. 0 B. 2 C. 4 D. 8

4. The cross TtPp X TtPp is a A. monohybrid cross B. homozygous cross C. dihybrid cross D. tetrahybrid cross

5. The diploid number of chromosomes in humans is A. 48 B. 47 C. 46 D. 23

6. A micrograph that contains pairs of homologous chromosomes arranged in decreasing size is called a A. metaphase plate B. pedigree C. linkage map D. karyotype

7. A cross between two plants produces 100 offspring. Of the offspring, 75 have flat leaves and 25 have curled leaves. What is the ratio of flat leaves to curled leaves? A. 75 in 100, or 3 in 4 B. 75:25 C. 25 in 100, or 1 in 4 D. 25:75

8. Using the information from question 7 above, what is the probability that any given offspring will have flat leaves? A. 75 in 100, or 3 in 4 B. 75:25 C. 25 in 100, or 1 in 4 D. 25: 75

9. The plants crossd in questions 29 and 30 are most likely both A. heterozygous B. homozygous recessive C. homozygous dominant

10. A person with an XO sex chromosome combination is a A. normal male B. normal female C. Female with turners syndrome D. Male with klinefelters syndrome

11. What substance picks up amino acids and carries them to ribosomes? A. mRNA B. rRNA C. tRNA D. DNA

12. What substance carries information from the nucleus to the cytoplasm? A mRNA B. rRNA C. tRNA D. DNA

Solution

1.The concept that a random distribution of alleles occur during gamete formation is the C. law of independent assortment

2.At the end of mitosis, how many haploid cells are there? A. 0 (mitosis results in two diploid cells)

3.At the end of meiosis II, how many haploid cells are there? C. 4

4.The cross TtPp X TtPp is a C. dihybrid cross

5.The diploid number of chromosomes in humans is C. 46

6.A micrograph that contains pairs of homologous chromosomes arranged in decreasing size is called a D. karyotype

7. A cross between two plants produces 100 offspring. Of the offspring, 75 have flat leaves and 25 have curled leaves. What is the ratio of flat leaves to curled leaves? B. 75:25

8.Using the information from question 7 above, what is the probability that any given offspring will have flat leaves? A. 75 in 100, or 3 in 4

10.A person with an XO sex chromosome combination is a C. Female with turners syndrome

11.What substance picks up amino acids and carries them to ribosomes?C tRNA

12.What substance carries information from the nucleus to the cytoplasm? A mRNA

9. Addition information required (ie Q29 and Q30)