Prezygotic reproductive isolation can occur O a. during embryo development b. during fetal development c. after birth d. during meiosis O e. during fertilization
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Q: Prezygotic reproductive isolation can occur a. during embryo development
A: Prezygotic reproductive isolation is the type of reproductive isolation.
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Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
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- QUESTION 27 Identify the most accurate statement: a. Sexual reproduction is often costly due to the need to find a mate. b. Sexual reproduction results in more offspring per mother. c. Asexual reproduction is always bad for a species. d. Aexual reproduction is associated with an increase in heterozygosity.Question 2. A widow's peak hairline is a dominant trait and a straight hairline is a recessive trait. What will be the genotypes and phenotypes of children of a homozygous dominant parent and a heterozygous parent? a) Construct a Punnett Square - List gametes in the area with the dashed line and the genotypes of the offspring in the area with the sold line. b) Genotypes of Children-c) Phenotypes of children-Need urgent help with this question. Why do siblings, who share the same parents, look similar but not identical. Refer to the opportunities for genetic variability in meiosis in the explanation. (Grade 11 Bio)
- Question 10. Identify the three ways that a karyotype can be organized.Question 49 The scientist(s) who showed that DNA contained equal amount of certain nitrogen bases (i.e., A=T and C=G) is (are): Question 50 The cell that starts meiosis I is: haploid diploid a somatic cell a gamete Question 51 What is “silent” mutation? Question 52 Where does mitosis occur within this figure? (see letters in boxes) A B C D C and D Question 53 What form of chromosome abnormality is shown in the following Figure? Question 54 What type of mutation causes Sickle cell anemia? Question 55 The order of nucleotide bases on two sides of a DNA double-helix is Identical Similar Complemetary Nonidentical Question 56 What types of mutations are NOT passed to future generations? Question 57 What enzyme copies DNA into RNA? Question 58 Meiotic cell division replicates a cell's DNA ____________ and then divides ______________ twice; twice. once; once. None of the answer choices are correct. twice; once. once; twice. Question 59 ____ divide during meiosis I, while…QUESTION 36 Which of the following occurs during meiosis in eukaryotic spermatogonia? A. One diploid cell becomes two diploid somatic cells. B. One haploid cell becomes two haploid somatic cells. C. One haploid cell becomes one diploid gamete. D. One diploid gamete becomes two haploid gametes. E. One diploid cell becomes four haploid gametes.
- Question 14 Antibiotic resistance is an example of a(n) 1. allele 2. phenotype 3. genotypeQuestion 3. There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent the frequency of the homozygous recessive condition, please calculate the following: A) The frequency of the recessive allele. B) The frequency of the dominant allele. C) The frequency of heterozygous individuals. Question 4 Within a population of butterflies, the colour brown (B) is dominant over the colour white (b). And, 40% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam, calculate the following: A) The percentage of butterflies in the population that are heterozygous. B) The frequency of homozygous dominant individuals. Question 5 A rather large population of organisms have 396 red-sided individuals…Question #1. What are the significance of APOPTOSIS. State whethear it is a developmental phenomena or not, support your answer. Question #2. What are the significance of MEIOSIS. State whethear it is a developmental phenomena or not, support your answer.
- QUESTION 39 Why does sexual selection typically act more strongly on males than females? a. Males typically participate in more parental care than females b. Females invest substantially more energy than males in gametes c. Females are likely to combat each other for mates d. Male limitations to reproductive success is gamete productionQuestion #5 Stages of MeiosisPlease help me for part a and b, thank you so much!QUESTION 18 Describe: Population aging and increased longevity are creating more multi- and intergenerational families in the U.S. Give two examples of ways in which family structure and family roles are changing because of these changes.