Answer:
your answer is B. Habitat Loss
Explanation:
What is the #1 cause for the loss of biodiversity?
Habitat destruction
Habitat destruction is a major cause of biodiversity loss. Habitat loss is caused by deforestation, overpopulation, pollution, and global warming. Species that are physically large and those living in forests or oceans are more affected by habitat reduction.
Habitat loss and overexploitation, driven by our rapid population growth and unsustainable consumption patterns, are the primary causes of biodiversity loss which is now happening up to ten thousand times faster than for millions of years before.
Answer:
a. 1/4
b. 0
c. 9/16
Explanation:
Genotype of the parents: AaBBccDd and AabbCCDd.
Aa x Aa= 1/4 AA: 1/2 Aa: 1/4 aa
BB x bb= All Bb
cc X CC= All Cc
Dd x Dd= 1/4 DD: 1/2 Dd: 1/4 dd
a) The probability of the progeny heterozygous at all loci= 1/2 Aa x 1 Bb x 1 Cc x 1/2 Dd = 1/4.
b) The probability of an offspring that is homozygous at all four loci= 0
Since the progeny will be heterozygous for B and C. None of the progeny can be homozygous at these two loci.
c.
Aa x Aa= 3/4 dominant: 1/4 recessive
BB x bb= All dominant
cc X CC= All dominant
Dd x Dd= 3/4 dominant: 1/4 recessive
The probability of dominant offspring= 3/4 x 3/4 = 9/16
Crossing over, happens in prophase 1 of meiosis
