r-selected species

High rate of per capita population growth

poor  competitive ability

Grows quickly 

age early, 

devoting much energy to producing  large number of progeny 

Small in size, and individuals do not live long. 

Random matting

TLS Online TPP Program

#Id: 2130

#Unit 8. Inheritance Biology

Heterozygous for inversions also exhibit reduced recombination among genes located in the inverted region.

TLS Online TPP Program

#Id: 2131

#Unit 8. Inheritance Biology

In prophase I of meiosis, an inversion loop forms.

TLS Online TPP Program

#Id: 2132

#Unit 8. Inheritance Biology

If a single crossover takes place in the inverted region an unusual structure results

TLS Online TPP Program

#Id: 2133

#Unit 8. Inheritance Biology

Dicentric bridge, Structure produced when the two centromeres of a dicentric chromatid are pulled toward opposite poles

TLS Online TPP Program

#Id: 2134

#Unit 8. Inheritance Biology

In paracentric inversion form,

a. Acentric chromatid- Chromatid that lacks a centromere

b. Dicentric chromatid- Chromatid that has two centromere

TLS Online TPP Program

#Id: 2135

#Unit 8. Inheritance Biology

Recombination is also reduced within a pericentric inversion. No dicentric bridges or acentric fragments are produced.