Dinosaurs, because they are extinct so it is impossible to determine if two individuals could have produced fertile offspring (biological species concept). Instead, scientists have to use morphological differences to determine species.

3 0

3 years ago

Aleksandr [31]

Answer:D

Explanation:

3 0

3 years ago

Consider a cross of beetles with exoskeleton alleles B and b and leg size alleles N and n. The maleparent is heterozygous in bot

vichka [17]

Answer:

a. Genotype of male parent= BbNn

Genotype of female parent: bbnn

b: Progeny ratio= 1: 1: 1: 1

c: 1/4

Explanation:

a. Genotype of male parent= BbNn

Genotype of female parent: bbnn

b. Gamete formed by the male parent: BN: Bn: bN: bn in 1:1:1:1 ratio.

Gametes formed by female parent: All gametes with "bn" alleles.

c. The probability that the offspring will have a genotype of Bbnn=

Bb x bb= 1/2 Bb: 1/2 bb

Nn x nn= 1/2 Nn: 1/2 nn

Therefore, probability that the offspring will have a genotype of Bbnn= 1/2 Bb x 1/2 nn= 1/2.

5 0

4 years ago

In 2001, Bacillus anthracis endospores were sent in letters to various locations in the United States. The recipients of the let

ki77a [65]

Answer:

It's going to be:

A-Endospores can survive extreme heat, lack of water, radiation, and exposure to many toxic chemicals.

C-Endospores are highly durable dehydrated cells with thick cell walls.

ANSWER IS A and C

3 0

3 years ago