5 Written questions
5 Matching questions
- What are transcription facts?
- What causes secondary sex characteristics in males and females? What secondary sex characteristics do males and females show?
- What is the difference between an intron and an exon?
- Describe the proof that evolution happens
- a Fossil record- shows a pattern of gradual change from past to present
Biogeography- shows that similar environmental conditions contribute to similar development
Developmental biology- shows similarity in embryonic development in organisms deriving from a common ancestor
Anatomy- shows similarity of structures n organisms that are related or descended from a common ancestor
Biochemistry- similarity in amino acid sequences of proteins or DNA give evidence of common ancestry
- b They regulatory proteins and activate or repress transcription of specific genes
- c Introns are non-coding segments of mRNA which are cut out of the mRNA after transcription
Exons are coding segments of mRNA which are spliced together after the introns have been removed.
- d ...
- e Males: testosterone / Secondary traits:
increase in height, longer and heavier bones, broader shoulders, thicker and tougher skin, deepened voice, facial hair, pubic hair, body hair, enlarged penis, scrotum, testes and formation of sperm
Females: estrogen / Secondary traits:
weight gain in breast, hips and buttocks, increase height, widening of hip, softer and smoother skin, growth of pubic hair and underarm hair, increase in breast size, enlargement of external genitalia, formation of ova, beginning of menstruation
5 Multiple choice questions
- Sex linked- the allele for the trait is located on the sex chromosomes
Usually carried on the X chromosome
- In DNA: Adenine with Thymine, Guanine with Cytosine
In RNA: Adenine with Uracil, Guanine with Cytosine
- The idea that large scale changes like formation of a new species require many small changes to build up over a long period of time
- Crossing over- homologous chromosomes exchange genetic material during the 1st phase of meiosis
Law of segregation- the random chance that the gamete will receive either allele
Law of independent assortment- during meiosis each allele for each gene separate independently from one another
5 True/False questions
What does it mean when it is said that marijuana is a gateway drug? → Bacterial STDs, Viral STDs, Parasitic STDs
Chapter 11 → Mutation in the cell cycle
What is punctuated equilibrium? → The idea that species do not always evolve gradually but actually pretty quickly as their is a sudden dramatic change in environmental pressures causing an increase in many new species to evolve
In a heterozygous cross, what are the phenotypic and genotypic ratios? What is the likelihood that an offspring will express the dominate trait? → The making of more of the same species.
The two main types are sexual and asexual reproduction.
Sexual- genetic material is donated from two parents to make a genetically unique offspring.
Asexual- genetic material is donated from one parent to make a genetically identical offspring.
What is the difference between an autosome and a sex chromosome? How many of each are found in a gamete and in a somatic cell? → Sex chromosome: chromosomes that determine the sex of a offspring
1 in human gametes
2 in human somatic cells
Autosomes: chromosomes that carry genes for all trats except the sex of the offspring.
22 in human gametes
44 in human somatic cells